Saturday, 9 June 2012

Book: Photography Theory. Chapter 1: Introduction


Book: Photography Theory
Chapter  1: Introduction
Theories of Photography: A Short History
Sabine T. Kriebel

The book starts with an introduction into Theories of Photography by Sabine Kriebel. It asks the question ‘What is a photograph? What is photography?’, which one would think is a fairly simple question initially, until you start to delve a little deeper, which is what this chapter does (Elkins, 2007, p.3). Photographs and photography range from practices to include everything from the daguerreotype (a single image unable to be reproduced), all the way through to the modern digital image (that may only ever exist on a screen).  In addition the question is asked – do we theorize the object (the photograph), or the practice (the act of taking) or their function? It functions as so many things – from journalism to art to advertising and everything in-between.  And the photograph and photography has changed over time – not just physically, but in how it is perceived by people, dependent on (amongst other things), the social and political scene of the day.

Nineteenth century photography was ‘based on nature, not technology’. This changed in the 20th Century with the advent of mass-reproduced photography and with the advent of the picture magazine. Some are critical about this advent of large-scale availability of photographs, and suggests that the world is aestheticized by it, and Bertold Brecht, in a book by Walter Benjamin remarks ‘Less than ever does the mere reflection of reality reveal anything about reality’ (from Elkins, 2007, p11). Benjamin also comments on what could be termed early post-processing (on gum prints) as ‘artificial and whims of fashion’ (Elkins, 2007, p13), which we might transfer over to today’s mass use of editing of images. The use of photographic images during the war had a large role in shaping the public’s view of the medium.

In the 1960s, photography started to enter the realms of art galleries and museums, led by the American museums, for example by John Szarkowski, curator of Photographs at the Museum of Modern Art from 1962 t0 1991, and by film critic Andre Bazin. Bazin noted that photography offers us ‘an image of the real, of something that was, that we can hold in our hands, paste in an album, or put in a frame, but that does not physically exist in our time and space’ (Elkins, 2007, p18). There seems to have been a lot of discussion around photography in the decades after 1960. Susan Sontag, for example, in her book On Photography ‘asserts that photographs only show the surface, not the complex relations below the surface’ (Elkins, 2007, p19).

In the 1980s, photography was turned to by art historians as an acceptable form of art. MoMA photography curator Peter Galassi wrote that ‘The object here … is to show that photography was not a bastard left by science on the doorstep of art, but a legitimate child of the Western pictorial tradition’ (Elkins, 2007, p24). Photographs were being reassigned into categories once only held by traditional arts. Here the repeatability of the photographs comes into question, with discussions around the value of something that can be ‘replicated endlessly’ (Elkins, 2007, p27). Similarly, there are questions around how something mechanical (using a camera) can be anything more than a mechanical process and thus is it art?

The 21st Century has brought much change to the medium with the widespread use of digital cameras. It is argued that ‘one of the predominant qualities of digital technology … is its ability of produce imagery that has no immediate relation to the material world. Until it is printed … the image is immaterial and ephemeral’ (Elkins, 2007, p39).

This book is discussing the theory of photography via several essays. Key themes are ‘the nature of its relation to the world-out-there, … quarrels about photography’s uniqueness, …and if it is an object or a function’ (Elkins, 2007, p42), and ‘How do the material and physical processes of different photographic practices contribute to the meaning of the image represented?’ (Elkins, 2007, p43). This first chapter introduction is an insight into questions around photography not considered by many outside the artistic institutions, and thus is already fascinating for a student of photography such as myself.

References:
Elkins, James (2007) Photography Theory New York: Taylor & Francis Group, LCC

Thursday, 31 May 2012

Artist: Misha De Ridder

I discovered the work of photographer Misha De Ridder recently and have enjoyed perusing his photographs over the last few weeks. A link on the Conscientious blog led me to his website.

Colberg (2012) describes his work as contemporary landscape photography, but notes that it's not what we would expect. I have to agree, and find his images varied and very interesting. I am currently reading Freeman's 'Perfect Exposure' book, which fits in nicely, as De Ridder makes very good use of a wide variety of exposure situations, from almost pure whites (e.g. Shadow Peak) to almost pure blacks (e.g. Federispitz) filling the frame, and a whole variety in-between. He also makes good use of geometric elements in some of his images, such as the strong triangles reflecting mountains in lakes (e.g. Bergwald), and some very low horizons in the frames. He shoots directly into the sun in a couple of images (e.g. Pine Mountain Lake), which results in an almost totally blown out, high-key image, but yet gives a hint of the landscape which is mysterious and compelling. He obviously pre-visualises his images very carefully and chooses the resulting exposure with a great deal of care and precision. Some of his 'landscapes' appear busy and messy and chaotic (e.g. Crystal Ridge) - rather like nature itself (I do find these images less appealing)! Placing the horizon in the centre of the frame may 'break' the rule of thirds, but it certainly doesn't appear to distract from the atmosphere of the image in the slightest. A couple of images appear 'other-worldly', such as Trollvassbu, which appears to be a night-time scene (deep blue-black sky), but yet the foreground grassy plain appears to be lit from the side with low light. Perhaps it is taken during a storm with the lighting changing quickly.
Shadow Peak, by Misha De Ridder. Taken for personal study purposes.

Federispitz, by Misha De Ridder. Taken for personal study purposes.

Bergwald, by Misha De Ridder. Taken for personal study purposes.

Pine Mountain Lake, by Misha De Ridder. Taken for personal study purposes.

Trollvassbu, by Misha De Ridder. Taken for personal study purposes.


I read a book review on Photo-eye.com by Bell (2011), and liked this quote about the horizon:
"Cutting through the center of the frame, the horizon creates a doubling effect that is simultaneously disorienting and hypnotic.
Images from De Ridder's book 'Abendsonne' can be seen at the photoeye website in a 'booktease'. All the images in the book are of the mountains and lake with the lake reflecting the sky and mountains, with the horizon dead in the centre of the frame. It is visually confusing and combined with quite erethral lighting, makes for a wide variety of fascinating images.

A conversation with the artist on the Lay Flat blog (2012) gives the following quote from De Ritter, in reaction to a question as to whether his work is 'sublime' as it is often described:
"I aim to explore the boundaries, the world beyond the threshold, the limits of the light, the limit of our presence, by observing, feeling, and to attempt to demonstrate what cannot actually be photographed.
This sounds like a bold aim!

If this is modern landscape photography then I'm interested in seeing more work like it! The images are beautiful but not at all conventional, visually stunning and certainly not as simple as they might appear initially.

References:
Bell, A (2011), Photo-eye Magazine [online] Available from http://www.photoeye.com/magazine/reviews/2011/10_20_Abendsonne.cfm [Accessed 31 May 2012]

Colberg, J. (2012), Conscientious Blog [online], Available from http://jmcolberg.com/weblog/2012/04/misha_de_ridder/ [Accessed 31 May 2012]

De Ridder, M. (2012), Misha De Ridder Website [online], Availabe from http://www.mishaderidder.com [Accessed 31 May 2012]

Freeman, M. (2009), Perfect Exposure. East Sussex: Ilex

Gunhouse, C. (2012), Layflat Blog [online] Available from http://www.layflat.org/a-conversation-with-misha-de-ridder/http://www.layflat.org/a-conversation-with-misha-de-ridder/ [Accessed 31 May 2012]

Wednesday, 30 May 2012

Exercise: Your tolerance for noise

Noise in digital images is a problem, not like film cameras where the film grain (equivalent of digital noise) gave 'character' to an image! I have had problems with noise in my images in the past, and was unsure of the best way to remove it. In general I just tried to avoid it by always shooting at the lowest ISO I could. I also noted that long exposures resulted in uncomfortable levels of noise, so I didn't do a lot of that kind of shooting as a result. In fact I think I have rarely used above ISO 800 or so, and certainly never done a test of the kind described in this exercise, so it was enlightening to do so.

The Exercise:
I have chosen my setup as a soft toy set against a white textureless wall. I am using a lamp to cast a shadow on the wall where I will try to see the noise in the images. I am using my Canon 30D which is quite an old camera now. I used a tripod and 50mm lens for this setup, and used the full range of ISOs avaliable, from ISO 100 to ISO 3200 (termed 'H' on my camera).


Original full size image, at ISO 100



Zoom in on one area to compare noise levels:
ISO 100
Low noise levels are present at ISO100, though there is some splotchiness in the shadow areas obvious when I flicked between this and the ISO125 image.


ISO 400
At this point noise is starting to become evident in the shadow areas in particular.


ISO 500
There is clear noise 'speckle' in this image.


ISO 1000


ISO 3200 (H)


Conclusion:
The images are useable until about ISO 500, at which point the noise is becoming quite obvious at this zoomed in scale (200%). However, I have had a play with noise reduction in the example below, using the 'noisiest' image.

This shows that the simple noise reduction in Lightroom does a very good job of removing the high levels of speckled noise that is seen in the ISO 3200 image on the left below. The right hand image would be usable for some situations, and this gives me confidence to up the ISO in situations where it is not possible to use flash or change the lighting conditions in any other way. It does give quite a smoothed look which may not be good for some subjects.
ISO 3200 image, with simple noise reduction applied to right hand image.

In the image below, I have cropped to a similar area as shown in the comparison above. This shows that at ISO 100 more detail is retained in the texture areas. This would be more obvious in print I think.
Similar area shown to previous, at ISO 100

Finally:
Noise reduction technology seems to change quite fast in new camera development, and my camera is now quite old (Canon 30D). Being able to easily remove the worst noise in post-processing however means that this is not a major problem for me at the moment. Having the knowledge from the above exercise to know how to look for noise (in what part of the image for example) and then how to remove it will be useful for future projects. I should add into my workflow a step to check for noise (at a zoomed in scale), and to apply some noise reduction for images with higher ISO settings.

Tuesday, 29 May 2012

Assignment 1: Workflow, review

Having received my tutor feedback on my first assignment, I am going to review some of his points in this post. He has broken down the elements of the assignment and provided critical feedback on each element, which is methodical and will provide a good basis for my preparation for future assignments.

Additions to my workflow:

  • Research - in the preparatory stage of my workflow
    • Subject-related technical research - research into specialist photographic principles and techniques related to my chosen subject matter. So for this Assignment I could have researched night photography of cities generally, found examples of others work, considered challenges associated with low-light photography, and considered how I might go about choosing exposures in such conditions.
    • Subject-specific contextual research - looking at and reading about the work of established photographers to inform my stylistic approach or introduce other approaches to consider with photographing my chosen subject. In this case since I have chosen night photography in a city, I could research architectural photographers and look for images online which I can use as inspiration for my own photography. I did actually look at some images of Brisbane at night as part of my workflow for this assignment, but not more generally than that - as part of my location scouting step.
  • Technical
    • Check that architectural elements are straight horizontals/verticals as a step in my post-processing workflow.
Specific image criticism:
Image 2 - ground is slightly sloping, try a more extreme tilting of the horizontals/verticals - not sure how to do this, or exactly what my tutor means - a reshoot, or edit??

Image 5 - the lamp post is not quite vertical - fix this (below).
Straightened Lamppost using crop tool in Photoshop


A contact sheet of my thumbnails:
Showed below with all my images with more than 2 stars, from which I selected the best (3 stars) to focus on for post-processing.
Contact sheet showing all images with >2 stars

How I chose the final images:
I wanted to have a variety of images in my final selection, and had visited a number of locations in Brisbane to give myself a good chance at getting a suitable number for submission. I wanted some variety in colour and scale and subject matter. I was really dictated in my final choices by what I had available to me! I also had a number of images taken earlier in the evening, but I felt that they didn't fit with the darker images, so chose not to include those in my submission set.

Demonstrate my workflow for one or more images:
Below I demonstrate the post-processing workflow performed in Photoshop on one of my images.
Starting image without any modifications

Colour Balance adjustment (layer)

Curve adjustment (layer)
Resultant image with Curves and Colour Balance applied
Cropped version, with some straightening applied during crop process
Final image, with 'Colour dodge' layer applied at 20% opacity and minor spot removal

Technical Research:
Low light photography Tips (from internet research)

low light photography
Snapsort's Low Light Photography Infographic

A few techniques from DPS blog on 'introduction to night photography'.

  • Try zooming whilst the shutter is open. Can experiment with times, but best to start with a known exposure time,  and then try zooming over the seconds the shutter is open. This will take practice! 
  • Light painting - I think this is a bit gimmicky actually, though I guess it might be a fun technique to try sometime.
  • Timing and patterns - for example getting a traffic light with all 3 colours showing. Again, it's a bit gimmicky, and certainly isn't going to make an exciting photograph on its own, but worth considering if my shot includes a traffic light.
  • Mirror lock-up can be useful

Careful metering is essential for night photography, and it can be useful to bracket images (and shoot RAW of course).
Choosing the 'correct' white balance setting is also important for night photography, though by shooting RAW this can be changed in the post-processing workflow.
The moon moves quickly through the sky and a relatively fast shutter will be needed to capture it in an image.

Contextual Research:
  • I note as my tutor points out, the importance of correct horizontal and vertical lines in most images, apart from obvious exceptions like looking straight up at the Eiffel tower.
  • Dramatic lighting and vivid colours, particularly when contrasted against silhouettes, make for effective city images.
  • Mixture of artificial and natural lighting. Combine with dramatic weather or clouds if possible.
  • Leading lines through an image.
  • urban city photography examples
    from http://photo.tutsplus.com/articles/inspiration/urban-city-photography-70-dramatic-examples/
  • Unusual buildings (e.g. modern designs - capture simply, matching in with the clean modern building).

Beautiful City Photo
from http://www.smashingmagazine.com/2009/02/01/35-examples-of-beautiful-city-photography/ 

  • Choice of viewpoint is important - keep it interesting, perhaps an unusual view is a good idea?
  • Framing - e.g. use one element of a building to frame another element (fore/background).

Beautiful City Photo
from http://www.smashingmagazine.com/2009/02/01/35-examples-of-beautiful-city-photography/

  • Include the human element. It can have a greater emotional impact to include people in photos that can otherwise be lacking. Tell a story with your photo.

Beautiful City Photo
from http://www.smashingmagazine.com/2009/02/01/35-examples-of-beautiful-city-photography/ 

  • Symmetry and reflection (pattern) can be interesting, and often seen in city photography
  • Beautiful City Photo
    from http://www.smashingmagazine.com/2009/02/01/35-examples-of-beautiful-city-photography/  
  • An unusual take on a classic image can make it stand-out.

architectural photography
from http://www.smashingmagazine.com/2009/02/01/35-examples-of-beautiful-city-photography/   

  • Get up early to take photographs in a quiet city, devoid of people
  • Look up!
  • urban city photography examples
    from http://photo.tutsplus.com/articles/inspiration/urban-city-photography-70-dramatic-examples/



References:
Gibson, Andrew (2009), Smashingmagazine.com [online] Available from http://www.smashingmagazine.com/2009/02/01/35-examples-of-beautiful-city-photography/ [Accessed 29 May 2012]

Levy, Sam, (2012),  Digital Photography School Blog [online] Available from http://digital-photography-school.com/introduction-to-night-photography [Accessed 29 May 2012]

School of Photography, (2012), School of Photography.com [online] Available from http://www.schoolofphotography.com/courses/free-night-photography-lesson.html [Accessed 29 May 2012]

Snapshot Blog, (2011), Snapshot Blog [online] Available from: http://blog.snapsort.com/2011/04/05/low-light-photograph/ [Accessed 29 May 2012]

Saturday, 26 May 2012

Exercise: Sensor Linear Capture

This project and exercise discusses some of the processing performed by digital cameras before it is presented to the user. A gamma correction curve is applied to bring a linear captured image to a normal appearance. This exercise simulates what happens in the camera, and draws our attention to the fact as a result of the in-camera processing, noise in the shadows/dark areas will be increased the most.

Starting with my original image (below), I then applied a curve to simulate what is initially captured in the camera (below)
Original image from camera
Gamma curve applied to simulate what is really 'raw' in the camera

The resultant image is below (note histogram in top corner, squeezed to the low end). The image looks very dark, highly constrasty and with some colour issues (e.g. blue leaves). In the dark areas there appears to be almost no detail at all.
Gamma curve applied to image
I now applied another curve to the edited image to try to bring it back to the 'original'. The resultant image is below (note that it's very difficult to bring it back to the original, as the curve editing is quite subtle and small changes have big effects when all the histogram is bunched up in one area. I also note that all the dark areas have come up well with information, similar to in the original image. It is a good demonstration of what can be 'brought back' from a seemingly very dark image! I also display the curve adjustment that I applied to the above image.

Resultant image

Curves applied to simulate what camera does automatically

This exercise shows the importance of correct exposure in-camera. Avoiding underexposure is especially important because any noise in the dark areas will be exacerbated by the automatic in-camera processing. It also shows me what can be brought back from an image which may be useful for some images that are accidentally poorly exposed.