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post Photos of “Voices Of Tomorrow” Launch Gig Uploaded

March 20th, 2006

Filed under: Photography — Ian @ 11:29 pm

Pictures from the launch gig from the 17th March 06 with Kids Choir 2000 featuring Hayley Okines have been uploaded, there are more to come. The colours and general image quality for these are pretty bad, this is due to the stage lighting being almost totally red. To the human eye this can look fine as the brain adjusts (google chromatic adaption or von Kries adaption) but there is a limit to what electronics can do to recover. This goes way beyond what camera White Balance controls can compensate for.

Not much can be done to retrieve realistic colour when the red channel is blown out and the green/blue is about 1/8th the strength. Plus the red/blue channels only contain half the resolution as the green channel so the sharpness of the images isnt great (dragging up the green/blue channels from its under exposed position adds lots of noise).

The reason for green being sampled more on digitial cameras is because the human eye is more sensitive to green.

Ways to fix this for the future? I can only think of 3.
#1: Use flash. Yurgh. And double yurg as you cannot get bounce flash in a hall.
#2: Some kind of light cyan filter for the camera - that will take out some of the red wavelength. Score -£100 for probably needing a couple of filters for varying levels of red, and double that to have one on each lens as im not fiddling about changing filters every time i change lens (pain anyway but the chance for sticking fingerprints on them when you are rushed would be very high)
#3: Never photograph there again!

2 Comments »

  1. Some kind of light cyan filter for the camera

    An internal optic built within the lens with these compensating filters would be good.

    What camera did you use?

    Comment by Otonqua — March 31, 2006 @ 1:23 am

  2. I used a Canon EOS 5D

    Comment by IanT — March 31, 2006 @ 4:56 pm

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