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White Balance Exposure
 
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abramwell


Joined: 17 May 2005
Posts: 684
Location: Gran Canaria, Spain
Post Posted: Tue Sep 05, 2006 4:38 am     Reply with quote

I use Custom White balance on the D20 a lot but it has just occurred tome that I am not sure what exposure to use when. I take a full frame photo of a grey card and then use it to set the WB.

In theory the color temp shouldnt change with exposure unless it becomes blown out but is there and accepted standrad?
kenny123


Joined: 13 Aug 2005
Posts: 5334
Location: -Author-"Keep It Simple, Shutterbug"e-book
Post Posted: Tue Sep 05, 2006 9:07 am     Reply with quote

abramwell wrote:
I use Custom White balance on the D20 a lot but it has just occurred tome that I am not sure what exposure to use when. I take a full frame photo of a grey card and then use it to set the WB.

In theory the color temp shouldnt change with exposure unless it becomes blown out but is there and accepted standrad?


Hi, simply take a full-frame photo of a grey card and check your histogram-if the hump or peak is just slightly to the right of center,tailing-off to the bottom corner at each end, you have got it. Regards, Ken
kenny123


Joined: 13 Aug 2005
Posts: 5334
Location: -Author-"Keep It Simple, Shutterbug"e-book
Post Posted: Tue Sep 05, 2006 9:11 am     Reply with quote

abramwell wrote:
I use Custom White balance on the D20 a lot but it has just occurred tome that I am not sure what exposure to use when. I take a full frame photo of a grey card and then use it to set the WB.

In theory the color temp shouldnt change with exposure unless it becomes blown out but is there and accepted standrad?


Hi, simply set mode to P-shift,take a full-frame photo of a grey card and check your histogram-if the hump or peak is just slightly to the right of center,tailing-off to the bottom corner at each end, you have got it. change to manual mode using settings obtained from exercise. Regards, Ken
abramwell


Joined: 17 May 2005
Posts: 684
Location: Gran Canaria, Spain
Post Posted: Tue Sep 05, 2006 9:18 am     Reply with quote

Perfect.

Thanks for the quick answer.

Alex
 
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