Sunday, 30 March 2014

Assignment 2: Tutor feedback


Student name 
Michael Millmore
Student number         
497132
Course/Module
Digital Photo Practice
Assignment number    
Assign - 2


Overall Comments

Many thanks for submitting this second assignment Michael, which I feel has really given you the opportunity to conduct some fairly serious technical testing – judging by your initial comments on the blog posting … this forced you out of your comfort zone !  As you have been transferred over to me we do not have any outstanding issues to address from the last report, but I will include several practitioner recommendations for you to look at if you haven’t already done so.

Feedback on assignment

I noted from reading the written element of your assignment the fear you encountered when viewing what you considered a ‘brilliant and original interpretation’ of this assignment.  I understand it can be difficult at times, but I think this will come through confidence about your work and the ability to become less personal about the work you produce.  My advice in the first instance is to try not being put off by the work of your cohort and simply use the work you admire to drive and inform your own.  Most things have already been done to be fair and if you dig deep enough you will find a source to most of what you consider ‘brilliant and original’ !  I will try to help and support you in this respect.

As a series of images, I actually thought they all worked really well and wondered why you had spent so much time beating yourself up prior to shooting !  Some of these images are both really well composed (Hair Brush on Window Sill) and really well observed (Light Falling across Wall).  They show both an attention to detail and keen visually curious eye, which is not always seen at this stage of an undergraduate degree.  They actually suggest to me that you have spent many hours in the past deliberating and carefully constructing images, which you should feel confident about.

I think my main advice to you at the moment would be to think much more carefully about what you are actually spending time taking photographs of, even if the exercise is based purely upon technical considerations.  Having said this I did note that some of your writing could be described as ‘descriptive’ in terms of technical weighting as opposed to being more ‘reflective’ in terms of concept.  I think you could afford to ease back on the former and try to further develop the latter within this module.  

When you look at a series of images and one makes you stop, this can be referred to in terms of what Roland Barthes would call ‘Studium’ or a general enthusiasm or interest assigned to an image.  This is as opposed to something that might be classed as a rare detail or piercing moment of either pain or delight, which Barthes would term ‘Punctum’.  My punctum will be different to yours, but it is a good exercise to try to start establishing this when viewing imagery.  I have listed a publication below by Barthes entitled Camera Lucida, which I urge you to read in relation to developing your photographic critical position.

Lastly, an additional positive point to make about your work is that most of the images show very little ‘dead space’, which is so often found in the early stages of photographic practice – prior to any theoretical compositional considerations being either learnt or absorbed.  You have actually already alluded to the fact that effective photography equals Technique + Composition.  Good or acceptable technique is arguably the first prerequisite for ‘good’ photography, but this alone will not make a ‘good’ image.  Image making must be complimented by composition, not just technique as mentioned before. We all use very similar technical equipment to make images, so composition is often one of the best ways in which a photographer can express their individuality and personal feeling in communicating their thoughts and ideas.

For the next assignment [monochrome] try to conduct some research into why anybody would specifically wish to remove the colour from an image. Obvious debates surrounding this are firstly to limit or remove distractions from an image … but also you can argue a monochrome image can sometimes look dated / or dateless. By reverting back to the results that were only available from the early stages of the process, you can somehow often associate these historic vales to the works.


Learning Logs/Critical essays

This is progressing well for you and you are updating with regular posts.  The design is very easy to navigate, which will support you during assessment.  You may also like to consider placing a couple of tabs on the home page which help to easily locate key areas of admin such as feedback reports etc.

I also noted many postings in relation to photographic practitioners which really is excellent to see at this level of undergraduate study.  I think you might be able to make more reference to some of this work in your future assignment submissions, in terms of who is actually informing your own practice and in what way etc. I’ve tried to suggest some more practitioners below which are not currently listed on your blog and whose work you really need to know about.

Suggested reading/viewing

Hunter, T.2003:Tom Hunter. Germany. Hatje Cantz Publications
ISBN-13: 978-3775712774

Bird, N.2001: Tracing Echoes. Leeds. Wild Pansy Press
ISBN-13: 900687135

Callaghan, H.2006:The Photographer at Work. New Haven, CT. Yale University Press
ISBN-13: 978-0300113327

Barthes, Roland.1993: Camera Lucida. Vintage Classics. London.
ISBN 13: 978-0099225416


Journals – Source / Portfolio

Conclusions and targets for next assignment

In terms of practitioners I would like you to take a look at the following and then perhaps review their practice via a blog posting … the same as what you have already been doing.

In her 2001 work ‘Tracing Echoes’, Nicky Bird’s study of the Julia Margaret Cameron Archive revealed ancestors that had been traced back from Cameron’s original sitters.  Bird actually states that the Tracing Echoes project initially stemmed from viewing an image made by Cameron in 1865-70 called ‘The Passion Flower at the Gate’.  The image provoked what Bird described as ‘an almost gut reaction to the picture’ due to its resemblance to the artists sister which are detailed below:

In addition to the above, I’d like you to take a look at the work of Harry Callaghan for the next assignment [Monochrome].  I can’t stress how important it is, to be able to know as much as you can about the photographic practitioners who have influenced today’s photographers.  Callaghan has also done some interesting work in colour.

Anyway, good work once again Michael and I look forward to your next assignment submission.

Tutor name:
Keith W Roberts
Date
30/03/2014
Next assignment due
May 2014


Wednesday, 19 March 2014

Assignment 3: Monochrome

"Today, the victory of colour photography over black and white is almost complete…..To work in black and white now is to make a deliberate aesthetic statement or to reference the work from the past in a particular way"1
Derrick Price

I have a great admiration for black and white photography; I love the way that monochrome can transform an image and focus our attention as viewers on small details or enable us to concentrate on form and tone. Yet, I rarely convert my images to monochrome - approaching this assignment one of the first question I needed to address was my reasons for this.

When I first became interested in digital photography I used photoshop a great deal to manipulate my images. The understanding I gained during this time has proved invaluable in underpinning my knowledge of how the digital image is made up, however, I reached a point when I realised photoshop and digital manipulation was getting in the way of me actually taking photographs. I would spend hours at the screen trying to make something of an image that did not warrant this - I realised my time would be better spent trying to take better photographs and began to concentrate on improving my photographic technique. I stopped using photoshop for every image I took and began only to use it when I wanted to create a specific effect. This also coincided with me becoming 'seriously' interested in photography and a growing appreciation I began to have of art photography - rather than reading 'how to' books and magazines I began to look at photographers work and started to read books on art theory. From this point on I only converted my images to black and white if that was my original intention - I loathe to see alternative pictures shown in both colour and monochrome, to me the photographer should have the conviction to do either one or the other but not both.

To get myself thinking about this assignment I brainstormed what black and photography could mean. Words like real, truth and documentary were the first I thought of along with the term 'fine art photography.' It is a phrase I loathe because of the connotations that photography can only be fine art by conforming to some sort of aesthetic standard. It suggests that the photographer must be serious about their work because it is produced in black and white; I hate pigeon holing and find the description quite insulting as it suggests that photography has to have some sort of sign post that it is art before it can be taken seriously. As my interest in photography grows I become less concerned with work that is purely pictorial and am increasingly attracted to work that is more challenging using unusual points of view or exposure settings. The work of Daido Mariyama comes to mind as an example of this.


I always like to have some sort of theme to underpin my assignments and I kept coming back to the notion of photography and reality as a subject to explore. It seems ironic that black and white images should be seen as more authentic than colour despite the fact they are not a direct translation of the way we see the world. Thinking of photography as truth I remembered two examples from my research which challenge this. The first is an image by documentary photographer Stepan Rudik, Street Fighting Ukraine which won third prize in the World Press Photo awards 2010 and was subsequently disqualified after judges deemed the image did not conform to accepted standards in the industry. (Original image here.) The final image is completely different to the original, the close crop onto the boxers hand being wrapped and gritty black and white treatment give a total different reading to the original image. Interestingly, these were not the reasons given for disqualification - a small area of background detail was cloned out of the image and that was why Rudik had his prize taken away.

Another example of pre digital manipulation of an image is by a photographer many see as a giant in the history of documentary photography W. Eugene Smith. Smith was obsessed with printing and would rework negatives throughout his career for different results. He wrote, "Negatives are the notebooks, the jottings, the false starts, the whims, the poor drafts, and the good draft but never the completed version of the work….Negatives are private, as is my bedroom…"2 In this article by photographer Joerg ColdbergTwo radically different interpretations of the same image, Madness 1959 are shown (called patient in a mental hospital, Haiti, 1959 by Michael Freeman in his book 'The Photographer's vision.') In his blog Coldberg wonders whether this image would have been disqualified by World Press Photo because the figures have been removed from the background in the second image. I wonder whether controversy over manipulating an image in post production either in the wet or digital darkroom is more about elitism than anything else - is it because digital images are seen as 'less' than analogue and photoshop is deemed a simple process in comparison to the skill required by a master printer in the darkroom that criticism abounds? It seems to me that photographers have always manipulated there images to heighten meaning or even change the way an image can be read completely. I do not see this changing any time soon and as long as we remember that any image we view is a subjective rather than objective view of the world I do not see a problem.

For the assignment I decided to take a series of images within a mile radius of my house. My first consideration for this was practical - I had a short space of time to complete the assignment and needed to have a subject that was accessible. I was also driven to explore the notions of photography and truth I have detailed above. I deliberately decided to concentrate on the more run down and unloved aspects of my locality and then to process the images in a way to heighten the subjects grittiness as much as possible. Viewpoint was particularly important in that I deliberately excluded details so the viewer does not have a clear understanding of what they are looking at - I was not interested in showing truth only an aspect of what can be seen in my local area. Where I live in the North-East of England there are high levels of unemployment and poverty, some of this can be clearly demonstrated near to my home but in my opinion is the exception rather than the rule of what the area is like. By choosing to ignore positive representations of the area the set of pictures gives a snapshot  of the local area but not necessarily the truth.

I researched different ways of converting the images into black and white (of which they are many) before deciding to only use Adobe Lightroom - I am familiar with the way Lightroom operates and like the intuitive way images can be processed and the way the software encourages experimentation. A lot of advice I read on converting images to black and white advocated trying different treatments to see how an image looks rather than a hard and fast rule or recipe for conversion. This was something I took on board using only my eye as a gauge to whether an image was working or not. My approach was to first convert to black and white and then push contrast and clarity as much as I could to stretch the tonal range as much as possible, with most  images I would also lower exposure to increase the gritty feel. I would then tweak the tone curve and black and white colour mix selections before adding a vignette and a small amount of grain. My overall aim was to create a set of images that look like are similar in their treatment and sit together as a group. The most success I had with this assignment however is how I managed to stick to my self imposed deadline for completing shooting, and then work with the images I had taken to produce the set. I had a much improved sense of confidence in my selections and editing choices and was able to pair down my first selects to my final 10 in a much shorter space of time than I usually do. Maybe it was the pull of a very definite deadline for this assignment that helped me or maybe it was my clear approach and increased confidence in my workflow that stopped me slipping into procrastination - I guess only time will tell!


Nikon D700, 50mm f1.4 lens, ISO 200, 1/180 sec @ F4.8


Nikon D700, 50mm f1.4 lens, ISO 200, 1/90 sec @ f9.5


Nikon D700, 50mm f1.4 lens, ISO 200, 1/180 sec @ f8


Nikon D700, 50mm f1.4 lens, ISO 3200, 1/90 sec @ f1.4


Nikon D700, 50mm f1.4 lens, ISO 1600, 1/60 sec @ f3.3


Nikon D700, 24-70mm f2.8 lens @ 24mm, ISO 1600, 1/250 sec@ f6.7


Nikon D700, 24-70mm f2.8 lens @ 45mm, ISO 1600, 1/250 sec @ f8


Nikon D700, 24-70mm lens @ 58mm, ISO 1600, 1/350sec @ f6.7


Fuji X-E1, 18-55mm f2.8-4 lens @ 18mm, ISO 200, 1/140 sec @f9


Nikon D700, 50mm f1.4 lens, ISO 200, 1/250 sec @ f5.6

1Photography: A Critical Introduction, Ed. Liz Wells (2009 Routledge)p112

2The Photographer's Vision, Michael Freeman,  (2011 ILEX) p.176

Sunday, 2 February 2014

Assignment 2: Seeing like your camera

This assignment has caused me a great deal of trouble and angst. In fact, it has proved such a sticking point that I feared for a time it would prevent my progress with the course. The brief requires 12 photographs to be taken under very specific lighting conditions - 8 from which 4 must be chosen, 3 images from each. The pictures should all be taken in JPEG format and no post processing is allowed - the challenge is to pre-visualise how the camera will represent the scene and choose settings accordingly.

The first thing that terrified me about the brief is the thought of not being able to use software to alter the image. I have shot all of my photographs in RAW format for years and see the captured image as only a starting point. I have no problems or hesitations in using software to alter an image and see this as nothing new, just a transformation of the way a traditional wet darkroom would be used to achieve a desired result. Rationally however, I could quickly see how stopping myself from doing this could be an interesting exercise and push me out of my comfort zone.

My main stumbling block came with the very specific set of shooting requirements for the image. I am always keen for my assignments to be linked in some way through either subject matter or concept. I really struggled with finding a way I could do this without simply ticking the boxes, usually I find some way into a project and through experimentation find my direction - on this occasion I was stumped.


To complicate matters, a fellow student (Stéphanie d'Hubert)  posted a brilliant and original interpretation of the brief. 
I love the energy and playfulness of the way Stéphanie has interpreted the brief. To top it all, the assignment is also presented in an original way as a slideshow to music. Instead of feeling invigorated however, I felt completely void of inspiration and ended up putting not only this assignment but the entire course and even photography in general to the back of my mind - I felt blocked and other aspects of life took precedence. Rightly or wrongly when I am not in the right frame of mind I find it extremely difficult to take photographs - it is an issue I have known about for some time and yet do not seem to be able to conquer. In the past a strategy has been to simply force myself to take photographs - of everything and anything. Eventually the simple act of pressing the shutter, usually without any preconceived notion of what I am doing, succeeds in bringing me out of the other side. On this occasion however, the assignment brief weighed heavily on me and I continued to struggle to find my direction.

A turning point came when I had a moment of clarity and realised I was simply overthinking the project. I realised the barrier to me completing the assignment was not the brief but was me myself - it was easier to say it was too constrictive than to try and come up with a creative solution like Stéphanie had. At this point I made the conscious decision to progress no matter what, not to worry about the quality of the outcome but to use the exercise as the learning tool it is designed to be. For a subject I decided to choose something that would be readily accessible to me to make things as easy as possible. With this in mind I came up with the idea of photographing different areas of my house - I am fascinated by the different lighting conditions can transform the everyday and mundane and how the framing of a photograph can change the way items are represented, sometimes becoming abstract and beautiful.

Approach:

As I mentioned earlier, I always shoot in RAW mode. I rarely worry about exposure as I know my camera does a pretty good job of this. Through experience I understand which lighting conditions can cause problems and read the histogram to make adjustments if necessary. This method is more intuitive and natural rather than being conscious. I always tweak exposure and white balance in Lightroom or photoshop, my choice of settings is often governed by pragmatism - I select the ISO setting and aperture that enable me to handhold the camera and achieve the shot. Thinking about the way I usually shoot in an analytical way shocked me a little - I realised how little I thought about anything other than composition when I take photographs and how much I rely in software to get the images I want. It was not always this way, I used to agonise quite a bit about which settings to choose - maybe my experience means I now make choices without realising it? Maybe this is true, but even if it is not I certainly do not consider things like white balance at the moment I press the shutter. After the event I will decide if I want the neutral, 'correct' colour balance my camera normally delivers or if I want to change this for creative reasons.

Another of the considerations and barriers I had to this assignment was the notion of how much to alter the settings at the time of capture. The possible variables I could make were quite daunting so I decided to limit myself - I would shoot mainly as I do normally as I have described above with the main variable being exposure compensation settings. I also wanted to use the assignment as an opportunity to experiment with a new camera (a Fuji X-E1) which I was less familiar with than my normal camera (a Nikon D700.) It was only as I approached the end of the shooting part of the assignment that I switched to my familiar Nikon D700, the main reason for this was to see how the images from each camera differed.

Shooting the images:

I shot the images I have selected here over  4 days during the same week in November 2013, all on my Fuji X-E1. I shot on days where I knew I would be able to pick up the camera as the light changed. I initially intended to only use these images for the assignment, however, as I began to examine the images in January 2014 it struck me that it would be interesting to apply the same approach to shooting but using my more familiar Nikon D700, these were shot over two days in January 2014. It was not until I had completed these shoots that I allowed myself to view all of the images - I did not want the pictures I took to be influenced by the selection process. This was a risk however as I did not know whether any of the images I had taken would be of any use for the assignment.

The notion of 'the decisive moment' is one I interested in, there has long been an idea that the thing that the differentiates the 'master' photographer from the rest of us is their ability to press the shutter at the exact moment all the elements of a photograph come into alignment. At the same time they can see how the image will be rendered and are able to select their settings accordingly. They do not need to bracket or take more than one image of a subject. Broadly I think most people know this idea is a fiction, indeed I learned in assignment 1 about workflow that the ability to edit image selection is a skill in itself, possibly even more important than pressing the shutter. My initial thoughts for this assignment was to allow myself only one shot of each subject, in practice I was not confident enough to achieve this however and I bracketed my shots extensively.

I gave little thought to the conditions set out by the assignment brief - I hoped that by simply focusing on situations that featured extreme contrast I would take enough images to fit the different criteria. I found that my confidence shooting increased as the assignment progressed: when I began I took an exposure the camera suggested and then bracketed around this. The more images I took I began to think more about how I wanted the image to look and begin with the setting I felt would most closely get the desired result.

Indoor space in which the only available light is strong natural window light


Fuji X-E1, ISO 400, 1/1600 sec @ f9, 18-55mm @ 24mm, - 1EV

For this image I wanted the shadow to be exposed as close to black as possible which also had the effect of defining the edges. I found -1 EV of exposure compensation was enough to achieve this, any more and the highlight area became too dark and lacked sufficient contrast, I also like the way the colour from the wall shows through the shadow. Increased exposure meant too little contrast. A further effect of lowered exposure was increased colour saturation.


Fuji X-E1, ISO 800, 1/3000 sec @ f5.6, 18-55mm @ 48mm, -2 EV

For this image I was attracted to the shape of the window light falling onto the wall and the way the physical straight edge of the door frame is echoed by the shadow and the interest created by the triangular shape of the shadow. -2 stops of exposure compensation have made the shadows extremely dark, almost black. The wood of the door frame is deeply saturated partly due to the exposure setting and provides a focal point as well as a point of contrast in an otherwise mainly monochrome image. The contrast also brings out the texture of the paint and grain of the wood.


Nikon D700, ISO 3200, 1/125 sec @ f6.7, 24-70mm @ 70mm, -3 EV

For this image I wanted to concentrate attention on the subtle tones created by the window light. The exposure compensation of -3 stops means the window area is exposed well while leaving just enough detail in the wall area for the viewer to be able to make out subtle detail, a high ISO setting of 3200 was necessary to handhold the camera for this image. Usually I am adverse to noise in an image, however, on this occasion the noise adds a slight amount of texture to the scene that I like.

Any backlit scene whether in direct or indirect light


Fuji X-E1, ISO 400, 1/60 sec @ f5.6, 18-55mm @ 55mm, +2 EV

This picture demonstrates how light can transform what we see, the strong sunlight and angle of view highlight the fingerprints on the window here. I chose two stops of increased exposure to emphasise the strength of the sunlight and also cause a desaturating effect.


Fuji X-E1, ISO 400, 1/1700 sec, 18-55mm @ 29mm, -2 EV

The pattern of the condensation on the window attracted me to this scene, I like the way the reduced exposure puts the window frame into darkness  and makes the colour saturation rich.


Nikon D700, ISO 3200, 1/180 sec @ f3.3, -2 EV

This is one of the few images that I took that I had a strong idea of how I wanted it to look. Without exposure compensation the camera would expose the majority of this scene too brightly. I wanted to achieve the feeling you have lying in bed before opening the blinds on a bright day and get a sense of the power of the daylight versus the darkness of the room.

Scenes which include objects of a very different reflectivity, even in flat light such as an overcast day


Fuji X-E1, ISO 800, 1/3500 sec @ f9, 18-55mm @ 61mm, -2 EV

I like the way the highlights created by the reflections off the mirror ball become the subject of this photograph, any less than the -2 stops of exposure compensation here meant the contrast of the little spots of light were lost in the image.


Fuji X-E1, ISO 800, 1/2000 sec @ f7.1, 18-55mm @ 49mm, -1 EV

Like the fingerprints on the window, the scratches of the kitchen work surface are emphasised by the strong window light and the cameras point of view. Again this shows a familiar surface from a different perspective as under normal viewing conditions this would appear smooth, without the contrast between light and shadow the texture would be lost in the image.


Fuji X-E1, ISO 400, 1/160 sec @ f4, 18-55mm @ 20mm, +1 EV

The remnants of breakfast cereal in the sink made an interesting pattern to my eye. I wanted to emphasise the bright reflectivity of the metal sink so increased exposure by one stop which also reduced contrast. I found the alternatives I shot with reduced exposure were had too much contrast.

Indoor scenes illuminated by a single source of artificial light of high luminance e.g. a desk lamp


Nikon D700, ISO 1600, 1/1000 sec @ f5.6, 24-70mm @ 66mm, -1.5 EV


I wanted to emphasise the shape of the light fitting in this image, the -1.5 stops of exposure compensation allow enough of the highlight tones to be exposed well while leaving a subtle amount of exposure in the background.


Nikon D700, ISO 6400, 1/15sec @ f2.8, 24-70mm @ 48mm, -2.5 EV

The pattern of the shadows from a tree with the only light source being a sodium street light. This exposure setting meant the window frame was in silhouette while there was enough brightness to show the pattern of the leaves and texture of the blinds.


Nikon D700, ISO 1600, 1.5 sec @ f4.8, 24-70mm @ 66mm, -1 EV

For this picture I wanted to emphasise the orange of the light source so chose the shade white balance setting. I placed the camera on the floor for this unusual viewpoint which is evocative of the stillness you can experience in a house at night time.

Conclusion

Despite all of the misgivings about this assignment I do feel I have learned a great deal from it, if nothing else I enjoyed taking photographs within the set of conditions I imposed upon myself and will continue to pursue this project in the future. The exercise has forced me to reflect a great deal on how I shoot photographs and to realise that I rely heavily on software in my workflow and that I do not give enough consideration to my exposure settings as I press the shutter. What I thought of as being confident in my technique is more like being too comfortable - it is interesting to reflect back and realise how much more consideration I was giving to my camera settings as the project progressed. Something I have not mentioned until now is cropping, which is something I use a great deal. I now realise I need to be much more careful with my composition and not rely too heavily on this - as I review the images here I am desperate to crop some of them to tidy up the composition. In the end it is safe to say I have not enjoyed this assignment, however, with hindsight I can see how completing it will inform my photography going forward. I wish I had been able to put the obstacles that prevented me from completing this project to one side and progress quicker, hopefully the fact that I eventually managed to produce something will help me going forward.

Friday, 8 November 2013

Exercise 10: Colour Cast and White Balance

One of my early memories from when I first became interested in photography and was experimenting with my first film SLR was being shocked by the extreme colour cast from a some pictures I took under tungsten lighting. The abiding thing this experience taught me was to be wary of how our eyes can compensate for different lighting situations and how the camera will not do this. Since the advent of digital photography however, white/colour balance has become less of an issue, especially if photographs are shot in RAW as the colour balance can be altered post capture. (I wonder however if this causes any problems - for example, is there a degradation in quality doing this versus setting white balance at the time of capture.)

As I always shoot in RAW mode I only ever have my camera set to automatic white balance. I find this gives a neutral result most of the time, however, I always experiment with white balance as this can significantly alter the mood of a photograph - higher colour temperatures giving a cooler/bluer result and lower settings giving a warmer/red/orange effect. White balance can also significantly effect colour saturation in an image and perception of exposure.

I skipped the first part of this exercise which called for photographs to be taken using different white balance settings in sunny, cloudy and shady situations as this is something I am familiar with already as described above. The second part of the project interested me however as this called for photographs to be taken in mixed lighting situations. The pictures I have chosen are taken outside my house at dusk with a streetlamp in shot. The different colour temperatures of the sky and the lamp give interesting results

All of these images were shot in RAW format and the Kelvin reading here is taken from Lightroom without any processing, interestingly the amount indicated was different to the one my camera manual gave.


Automatic White Balance:


7350 Kelvin (-23 tint)

Firstly I wanted to compare how my camera rendered the scene with the automatic white balance setting. This is pretty close to how I remember the scene looking with the sky being grey/blue and the orange of the streetlamp illuminating the scene. The streetlamp itself is rendered white.

Incandescent:


2950 Kelvin (-3 tint)

This setting has given the light source the appearance of white light, the orange cast from the street lamp is virtually eliminated and the sky is a dramatic, saturated blue. The centre of the light appears pure white as does the 'halo' around it. This also makes the light and the sky contrast more and the light appears to be brighter while the fence and grass appears much darker.

Fluorescent:


3950 Kelvin (+30 tint)

A much redder element is added here although the blue of the sky is maintained. The light has a more pink than orange tint.

Daylight:


5000K (-6 tint)

This image appears much brighter than the previous 2, the sky is much more muted and grey rather than blue. The cast from the lamp has a warm orange feel.

Cloudy:


5700K (-8 tint)

Very similar to the daylight setting, the main difference is an apparent increase in brightness.

Flash:


6100K (-6 tint)

There is a slight difference in the perceived brightness here in the sky and grass. The grass appears slightly less orange and more green.

Friday, 1 November 2013

Exercise 9: Scene Dynamic Range

Having not enjoyed the previous exercise I decided to give it another go to see whether I could get any better results - I achieved a 4 stop difference which was even worse than my previous result! With this in mind I decided not to complete this exercise. I did do some more reading about dynamic range however.

In his book 'Perfect Exposure', (Ilex 2009) Michael Freeman discusses dynamic range and how this relates to exposure extensively. He defines dynamic range as "the ratio between the maximum and minimum luminance values in a scene or in an image." He also concludes that "the highest image quality in digital photography comes from using the full dynamic range of the sensor to capture the full range of the scene." I am unsure about this statement. "highest image quality" seems a particularly loaded phrase and while I think I understand what Freeman is asserting I do not think I share his valuation of what makes an image of the highest quality. As I became more interested in photography I become less worried about making images that comply with an accepted notion of aesthetic beauty and more concerned about how a picture can be more interesting because it breaks convention. For example, previously I would always select the lowest ISO setting I could to achieve the smoothest tonal values in my pictures (and what I thought was the highest quality.) Now, I find myself often using high ISO settings and have come to appreciate the immediacy noise can add to a picture.

Freeman continues to describe (what he considers) to be the 12 types of exposure situation and how recognising these in combination with an understanding of the cameras dynamic range can enable the photographer to select the desired exposure settings. He says that he arrived at this analysis through experience:

"the way we assess types of scenes subconsciously has been built up over time and is embedded somewhere in our brains"

Analysing a scene relies on understanding key tones (one or more areas of a scene that have commanding importance) and average tone (most people expect most subjects to be average in tone.)

1st Group - The Range Fits:

  1. Range Fits - Average

The dynamic range of the scene fits the range of the sensor - histogram within 5-10% of the limits.
Good practice - take a test shot (especially for action.)
Technique - spot maximum highlight and minimum shadow in a scene and make a decision which to set exposure for.

  1. Range Fits - Bright

Examples - snow, white walls, white clothing.
Average meter readings would not give the right result, use centre weighted on the key tone and positive exposure compensation.

  1. Range Fits - Dark

Opposite approach to 2 to keep dark details black and not grey.

2nd Group - Low Range:

Atmospheric conditions diffuse light and act as a filter that even out tones in a scene e.g.. Haze, mist, fog, dust.

  1. Low - Average

Histogram will be cantered with room either side, often 'bell' shaped.
Sometimes called flat lighting

  1. Low - Bright

No important shadow areas.
Will often need positive exposure compensation to keep bright but danger of highlight clipping.

  1. Low - Dark

Not common - mainly due to taste - people prefer light rather than dark images. Most low key images tend to have small bright tones which raise the dynamic range e.g.. Dusk, dawn, night, deep colours e.g.. Purple.

3rd Group - High Range:

Also referred to as over scaled or high contrast. Important to make decisions about clipping.

  1. High Key - Average

Extreme mixture of tones, some clipping inevitable. Most common lighting situation when range is high.

  1. High - Large Brighter

Subject matter brighter than average and the surroundings.
Technique - centre weighted and positive exposure compensation.

  1. High - Small Brighter

Difficult to measure - spot metering best. Histogram of little use because small area of brightness displayed as relatively few pixels. When key tone small danger of over exposure - care needed to avoid clipping but high enough to show detail.

  1. High - Edge Lit

Most specific, rarest and difficult lighting situation. Effect depends on situation e.g.. Thin edge may blow highlights, broader expose as light, not clipped.
Bright edge usually key tone meaning loss of shadow detail is often acceptable. (An example of a low key image)

  1. High - Large Darker

Background will suffer from over exposure unless contrast dealt with by adding light or in software.
Very common e.g.. Outdoor scene with a band of sky.
Choices - expose for average tone or darker or silhouette.

  1. High - Small Darker

Background always dominates here and is where exposure decisions should be taken.

Freeman brings his analysis of exposure situations with a description of Envision - being able to imagine how a scene will look if you give it a certain exposure:

  1. Learn to discount your eyes efficiency at seeing detail in deep shadows and bright highlights as your camera cannot see both.
  2. Be able to imagine how a scene will reproduce of given 'normal' or 'average' exposure.
  3. Decide how you would like it to look.
  4. Anticipate how it might look under different lighting conditions that are practically possible, such as change in the angle of sunlight or under controlled conditions by changing lighting.


While I find the information here interesting, even invaluable, it remains difficult to translate into practical application. The notes imply the ability to consider a scene carefully and make adjustments as necessary without time pressure. Unfortunately, in practice this is not often possible. I guess this is where experience comes to the fore and becomes key. I imagine accomplished photographers like Freeman are able to analyse a scene quickly and come make exposure decisions almost intuitively. I have a tendency not to think too much about the exposure settings I make, partly this is because experience means I have a clear idea of the result that will be achieved but also it I because I always shoot raw and know I have a certain latitude to be to alter exposure in processing. I have never worried about this but increasingly I am beginning to think this is laziness on my part - should I be striving to have a clearer understanding of what a photograph will look like when and attempting to get my camera settings as close as possible to this or is it okay to make these decisions at the computer screen? I do not think there is a right or wrong answer to this and experimentation is probably the best course of action. I will attempt to apply the knowledge gained here to my shooting however and see if the results are different.