Quote Originally Posted by Flish


I like to understand more about this...


I think I understand the post processing white balance part as the card become the neutral gray target to balance against but I'm not sure how or why you are using the card relative to setting the exposure.





Thanks in advance for the help...
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For the extremes (white and black), the meter will over-compensate due to the extreme reflectance of light for white, and the lack therof for black. The meter has a benchmark expectation of 18% reflectance. So if white relects more than that, you will have an underexposure, and if black relects less, you will get an overexposure.


Here's an example where the first photo is the "correct" exposure, and the second is "overexposed" by one stop:


[img]/cfs-file.ashx/__key/CommunityServer.Components.UserFiles/00.00.00.24.20/IMG_5F00_4186.JPG[/img] [img]/cfs-file.ashx/__key/CommunityServer.Components.UserFiles/00.00.00.24.20/IMG_5F00_4187.JPG[/img]