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05-25-2008, 07:40 PM   #1
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AWB different at different ISO? (K20D)

I mainly shoot at ISO 100 and observed over the past month or so with my K20D, that my AWB is on the green side of neutral. (in Lightroom I usually have to add 10 points tint toward magenta)

I was out and about this weekend and did an ISO test, (same scene on a tripod etc) I did the same test in 2 indoor locations and 4 outdoor locations and noticed that at ISO 100 there was a noticeable green shift (in lightroom it shows up as -10 tint) but ISO 125-800 (which all came out nearly identical to each other) the shots show up as neutral (+1 tint in lightroom)

Anyone else notice a similar deal? The images display the same in Pentax Photo Browser/lab and Capture One as they do in Lightroom, so it isn't lightroom...

Curious,
Brian

03-27-2011, 04:30 PM   #2
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You've now given me something else to factor in when calibrating my WB presets.
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