Can anyone explain this?

Oggy · 2009-11-20T23:33:59+0000

The weather is awful and I've had a brutal week. I needed to take a few photos so I put the K20 on a (naff) tripod (no weights this time :wink:) and fired off a few with my DA* 16-50 and DFA 100. No adjustments to camera settings, little PP other than cropping and re-sizing. 1/. 16-50 2/. 100 3/. 100 again When I took the second picture I was amazed at the difference in tint/colour cast. I looked at the two for a while and worked out that the second picture was taken at a different angle relative to the light source (a 150 W eq low energy bulb) so I moved the camera to a similar position to the first picture and took the third. Would people expect the angle of the light to make this much difference to the colour?

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Oggy Oggy

2406 posts
17 years
Worthing

Posted 21/11/2009 - 13:31 Link

Thanks for the replies.

I am using a K20. I tend to use the basic white balances as appropriate then make any adjustment as needed in pp.

As to the flashing thing - I hadn't thought of that. Actually they flash 100 times a second (one positive and one negative cycle at 50Hz). I have found this with optical rev counters. Given the exposure time of 1.3 seconds (60 odd cycles) I am surprised that the difference is so great. I'll have to find a tungsten bulb.