>I tend to agree and do the same, but..
>
>The way I understand it every digital camera generates a jpg which isÊ
>what gives you the picture on the LCD. It is small, the same size asÊ
>the LCD, because that is the only way you can get the instantÊ
>response you need for that function. This jpg gets the settings fromÊ
>the camera like white balance. Now here is the tricky part. TheÊ
>histogram is generated off this jpg. If you have a single histogramÊ
>it is just the green channel from that jpg. So, depending on yourÊ
>camera settings, your exposure may be off on your raw file because
>you are looking LCD exposure guides based on jpg.
>
Apparently (at least for Nikon cameras), the exposure _does not_ take the WB
into account, but the histogram does. Thus it would be possible in some cases,
when using the histogram to judge exposure, to blow an exposure which would
have been correct if not taking the histogram into account.
Look up these threads:
http://forums.robgalbraith.com/showflat.php?Cat=0&Number=416369&an=0&page=0&gonew=1#UNREAD
http://forums.dpreview.com/forums/read.asp?forum=1021&message=17829518
Someone made a profile for the D200 that makes the camera histogram ignore the
WB.
Bernard
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