Setting white balance with a gray card

Discussion in 'Lighting and Hardware' started by adamhiram, Jun 1, 2017.

  1. adamhiram

    adamhiram No longer a newbie, moving up!

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    That's exactly what I'm using, pictured above. Sounds like it might just be a quality control issue, as mine is definitely not color neutral, and doesn't produce consistent results. I looked at product reviews on various sites, and pretty quickly found the same complaints I have. At least these complaints seem to be the exception and not the norm. The ones quoted below are from B&H.

    I experienced both of these issues:
    Here's someone else who had inconsistent results:



     
  2. tecboy

    tecboy No longer a newbie, moving up!

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    I have a large Photovision. It is nice to get a right exposure on my camera, and I don't have to worry about changing the exposure later. I notice the gray in the middle gets a slight yellowish tint white balance, but is hardly to noticeable. It is just a minor issue.
     
    Last edited: Jun 7, 2017
  3. Christie Photo

    Christie Photo No longer a newbie, moving up!

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    Ahhh.... I see. Had no clue. (For the record, the procedure works in raw too on Canons.)

    Thanks, Joe, for clearing this up!

    -Pete
     
  4. table1349

    table1349 Been spending a lot of time on here!

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    I suspect that you don't. I got mine years ago when Lastolite was putting them out with 12% gray on one side and white on the other. All their gray targets are now 18% gray.
     
  5. snowbear

    snowbear Big Furball Supporting Member

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    keeping in mind that the percentage has nothing to do with the light-dark value of the card (and so nothing to do, specifically, with white balance).

    I just eyedropper a white spot (usually a blown-out highlight) and get decent results.
     
  6. table1349

    table1349 Been spending a lot of time on here!

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    In theory that is correct, however in the real world that may or may not be, depending on the materials used. That is where some problems lie. A different batch of dye in a slightly different shade could be the culprit due to the composition of the chemicals in the dye, the materials used or the finish. It is hard to tell.
     
  7. Braineack

    Braineack Been spending a lot of time on here!

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    subjective. i think it looks much better than the shot above.

    shoot raw, calibrate the WB in post for your session that youre happy with.
     
  8. tecboy

    tecboy No longer a newbie, moving up!

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    I heard the gray card tends to age every year. Probably get discoloration or turn a little yellow. I do see any sign of aging on mine.
     

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