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Thread: White card to calibrate white balance?

  1. #1

    Default White card to calibrate white balance?

    Is anyone using a white card to calibrate white balance? If so, what do you use?

    I read about WhiBal (see http://www.rawworkflow.com/products/whibal/index.html) which is supposedly quite good. But man, it costs an arm and a leg! Wondering if there are more affordable alternatives.

  2. #2
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    Default Re: White card to calibrate white balance?

    Think you meant, grey card.

  3. #3

    Default Re: White card to calibrate white balance?

    Quote Originally Posted by espn
    Think you meant, grey card.
    I meant white card actually. : )

    Check out that link to WhiBal: one of the cards is a white card.

  4. #4

    Default Re: White card to calibrate white balance?

    Quote Originally Posted by ShutterBugL
    I meant white card actually. : )

    Check out that link to WhiBal: one of the cards is a white card.
    you use a 18% grey card to measure white balance!
    deadpoet
    my portfolio

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    Default Re: White card to calibrate white balance?

    Quote Originally Posted by Deadpoet
    you use a 18% grey card to measure white balance!
    I assume that should read "you CAN use an 18% gray card...". There's no special requirement apart from not having a colour cast. A sheetof unexposed, fixed photo paper or inkjet photo quality paper should be good enough for practical purposes.

  6. #6

    Default Re: White card to calibrate white balance?

    I thought white card is to set WB and grey card exposure?

  7. #7
    Moderator catchlights's Avatar
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    Default Re: White card to calibrate white balance?

    Quote Originally Posted by KCLow
    I thought white card is to set WB and grey card exposure?
    you can use any card have neutral tone to set white balance, so grey card can use for set white balance.

  8. #8

    Default Re: White card to calibrate white balance?

    It looks like a great product but just too damn expensive. I think a gray card would serve it''s purpose at a fraction of the cost. FYI when using a white piece of paper be careful and ensure that it is pure white, some papers have a slight hue to it, it might throw your custom color balance off.

  9. #9
    Member kijer's Avatar
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    Default Re: White card to calibrate white balance?

    use styrfoam cup can oreadi... ;P

  10. #10

    Default Re: White card to calibrate white balance?

    Thanks for your comments, everyone.

    Quote Originally Posted by hondasleeper
    It looks like a great product but just too damn expensive. I think a gray card would serve it''s purpose at a fraction of the cost. FYI when using a white piece of paper be careful and ensure that it is pure white, some papers have a slight hue to it, it might throw your custom color balance off.
    Agree about the cost. That's why I'm exploring cheaper alternatives. Will check out the grey cards you mentioned.

    Kiher's sytrofoam cup idea is also interesting -- it'll still work when wet!

    Out of curiosity, anyone here using some other homemade white / grey card or some other homemade alternative for white balancing?

  11. #11

    Default Re: White card to calibrate white balance?

    Formica sample or paint swatches? If you can find one to match the 18% gray card.

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    Default Re: White card to calibrate white balance?

    learn something new everyday... i always thought white card = white balance, 18% grey card for metering.
    Logging Off. "You have 2,631 messages stored, of a total 400 allowed." don't PM me.

  13. #13
    Moderator catchlights's Avatar
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    Default Re: White card to calibrate white balance?

    Quote Originally Posted by Del_CtrlnoAlt
    learn something new everyday... i always thought white card = white balance, 18% grey card for metering.
    the RGB value for white card is 255, 255, 255.
    and the 18% grey is 128,128,128, as long it is neutral in color, can use for white balance setting.

  14. #14
    Member smtan24's Avatar
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    Default Re: White card to calibrate white balance?

    Those cards look like nylon plastic. What a rip off. Probably cost them a few dollars to manufacture.

  15. #15

    Default Re: White card to calibrate white balance?

    Quote Originally Posted by hondasleeper
    Formica sample or paint swatches? If you can find one to match the 18% gray card.
    that's what my wife suggested too

  16. #16

    Default Re: White card to calibrate white balance?

    Quote Originally Posted by smtan24
    Those cards look like nylon plastic. What a rip off. Probably cost them a few dollars to manufacture.
    dunno leh. some of the reviewers say very good quality and it really serves its purpose.

  17. #17

    Default Re: White card to calibrate white balance?

    Quote Originally Posted by smtan24
    Those cards look like nylon plastic. What a rip off. Probably cost them a few dollars to manufacture.
    Yeah.. but they are calibrated. That's the difference..

  18. #18
    Senior Member G-man's Avatar
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    Default Re: White card to calibrate white balance?

    Evergreen sheet styrene, $9 from Bras Basah Artfriend, or get Tamiya 1mm pla-plate, same thing except Tamiya's come with 1 side matt and 1 side coated with a sheen, so use the matt part.

  19. #19

    Default Re: White card to calibrate white balance?

    Quote Originally Posted by G-man
    Evergreen sheet styrene, $9 from Bras Basah Artfriend, or get Tamiya 1mm pla-plate, same thing except Tamiya's come with 1 side matt and 1 side coated with a sheen, so use the matt part.
    Have you done a spectral analysis on them? If not, you won't know if they are really neutral.

  20. #20
    Senior Member G-man's Avatar
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    Default Re: White card to calibrate white balance?

    Well I am just an amatuer hobbyist, so I am quite happy as long as it looks white to me, my colours come out accurate and they work, it's fine by me.

    If you're doing it pro, then yea I say invest in something that'll last you a long time. In my case, i have tons of styrene sheets lying around as I build gunpla model kits too so those were good enough for me.

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