Hi,
I've experienced the same problem and it seems that Tungsten WB is not
fixed WB setting. Instead, it tries to adopt to lighting conditions.
Shooting JPEG, try fixed K value instead - for me it have been worked
fine. Of course, RAW would be the best (but a bit more time-consuming)
solution.
BR, Margus
On 11/29/2010 9:18 PM, P N Stenquist wrote:
On Nov 29, 2010, at 1:57 PM, Igor Roshchin wrote:
Mon Nov 29 09:52:30 CST 2010
P N Stenquist wrote:
On Nov 29, 2010, at 10:39 AM, Igor Roshchin wrote:
Hi All,
While shooting an argentine tango performance over the weekend
I set the WB of my K-7 to "Tungsten light".
I was surprised to see that while ~80% of shots were with about the
right
color, some considerable number of shots had a distinctive.
It was not as red as it would have been if I left the WB to be on
Auto,
but still yellow.
All the shots were taken under the same condition: in the same room,
from the same point, with no light changing, just the couple moving.
More over,- some series of shots were made with the the couple in
place ,-
and some have the WB alright, and some - are yellow.
Has anybody experienced anything of this sort?
What could be the reason (besides some malfunction of the camera)?
What fills the frame affects white balance. If the dancers were blocking
some of the light on some shots and more fully lit on others, you'll get
some variation of color temp. Easy enough to correct during conversion.
Paul
Paul,
Yes, that could do it in principle, but it doesn't make sense in the
current situation. Since I _fixed_ the WB to a particular setting,
very slight changes shouldn't affect the WB.
To better illustrate what I observe, - let me show you this image:
http://komkon.org/~igor/PHOTOS/Mixed-2010/WB-problem-2010-11-27.jpg
No WB or exposure settings were changed in this sequence.
These photos were not modified.
Yes, one can correct the WB, but it is not how it should work, isn't it?
Igor
You're right. Something is out of whack here. I never shoot anything expect AWB
and RAW, so I can't tell you if my camera shares this problem. When I have
time, I'll give it a try under some tungsten lighting.
Paul
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