Hi, I just received this gray card from Adorama: http://www.adorama.com …?searchinfo=gray+card+101
Although I know the basics of correctly doing a custom white balance (before shooting in-camera, or in PP), I guess I am looking for a better understanding of how to correctly use this new item.
I realize that the middle lighter gray is the typical color to use for WB, but I don't know when you would use the darker gray (it's not completely black like it says) or white (if ever).
Also, say I am going to take one photo of the card for doing the custom WB later in PP. Do I take a close-and-in-focus-as-possible shot of the middle gray color and use that whole photo's WB for the CWB? Or do I place the whole card further away from the lens, somewhere in the scene so that it is more in the same lighting as the subject and select the gray portion with the WB dropper later? Do I take that original card photo with Auto WB set or a different WB (In RAW and JPEG situations)? I've read both..
How do you really do the in-camera CWB setting when you cannot use an eyedropper to select the specific gray card area for WB? Holding the card way up close filling the whole frame doesn't work because the lighting is different there than in the actual scene location (probably not as close to the lens).
Thanks in advance.