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Old Feb 9, 2012, 10:56 PM   #1
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Default Seeing red: As well as blue, yellow,...

Pictures taken in Lake Tahoe, CA. The second is my son (3 years ago) having fun in the frigid lake water.
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Old Feb 10, 2012, 11:10 AM   #2
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Two excellent photos. However the first shows the red problem with the canoe/kayak on the left end. The red appears to be over saturated and some detail is lost.

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Old Feb 10, 2012, 3:16 PM   #3
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Thanks, Cal. This exercise is actually bringing up something strange. This canoe picture below was taken right before the one I posted first. Comparing the EXIF data I see that I made some changes to the camera settings between the two shots. On the first shot (above), there was no gain control, contrast=low and saturation = normal. The shot below, gain control was low gain up, contrast=high and saturation=high. Even though saturation was set to high, the image seem less saturated and I can see more details on the red canoe. I also noticed that the ISO and shutter speed were different between the two shots. The shot below has a higher ISO and faster shutter speed than the photo above.
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Old Feb 11, 2012, 12:37 AM   #4
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Could be post processing or you can get strange color shifts in the red spectrum when converting from Adobe RGB to sRGB for web publishing.
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Old Feb 11, 2012, 10:02 AM   #5
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The thing is, I haven't PP'ed these images in terms of saturation/exposure. I only changed camera settings prior to taking the shots and cropped them in Picasa.
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Old Feb 11, 2012, 7:05 PM   #6
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I have also noticed that a faster shutter speed and/or larger f-stop will result in less saturation and more details.
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