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How do I get a true white background?

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    ryan_pike
    29 May 2006 - 5:38 PM
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    I have recently got the bowens 2x500 studio kit. At the moment I shoot mainly still life and products and I am having a lot of trouble getting the surface that I am shooting on looking white. It seems to always come out a pinky grey colour. I can correct this with curves in PS but is there a way for it to come out true white? For the surface I shoot on I use white paper. Is there a technique or different surface I can use to get this 'true' white background.
    Thanks Smile

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    keithh
    8
    20891 forum posts Wallis and Futuna6 Constructive Critique Points
    29 May 2006 - 9:49 PM
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    It's simply a grey/white balance problem. You need to tell the camera, either before shooting or after in your processing software, what part of the image is a true, absolute white.

    AlistairF
    29 May 2006 - 10:11 PM
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    Think what Keith should have gone on to say is to look at how to set a custom white balance for your camera and set it to the white in the shot you are taking with the lighting you will be using.

    waltersphoto
    29 May 2006 - 11:16 PM
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    shoot raw and use click white in a prog like Bibble. This will give white without affecting brightness.
    Or get it right beforehand which is nigh on impossible

    spaceman
    30 May 2006 - 1:15 AM
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    Quote: Or get it right beforehand which is nigh on impossible

    Photographers did it all the time before digital.

    keithh
    8
    20891 forum posts Wallis and Futuna6 Constructive Critique Points
    30 May 2006 - 1:17 AM
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    To be fair...some of them did...in making the right film choice. I used to see some shockers though.

    KenTaylor
    KenTaylor (e2 Member)
    7
    2648 forum postsKenTaylor vcard United Kingdom1 Constructive Critique Points
    30 May 2006 - 1:36 AM
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    White light and digital don`t like each other. You have to tweak away at it.
    Ken

    deviant
    30 May 2006 - 1:48 AM
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    Does the 300D have a custom white balance? If it does shoot the white surface under same lighting conditions, set it as a custom white balance.

    Or Fix WB for flash and see what happens with your lights?

    Or buy an expodisc and use that for custom WB

    Or be really flash (pardon pun) and buy a colour temperature meter...

    Or shoot RAW and tweak it as you process.

    strawman
    30 May 2006 - 2:27 AM
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    Yes the 300D has a custom white balance. You need to read the manual a bit to understand how to use it. I have found it easier to just shoot RAW.

    robporter
    30 May 2006 - 2:56 AM
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    To be fair to its designers, it probably takes a maximum of 20secs (and a white surface) to set the manual WB on the Canon 300D.

    Rob.

    SandraD
    2 Jun 2006 - 12:19 PM
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    You need to light the background as well as the subject. I do mainly portraiture using a white background. I need to have two lights for the background and two for the subject - I also use the white eye-dropper in levels to make it even brighter. Hope that helps a little. Sandra

    RobertMo
    18 Jun 2006 - 9:45 AM
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    Ryan,
    Without sounding dead boring its all to do with lighting the subject and background.
    If you light the subject the same as the back ground the whites will want to go 18% grey so you have to go with it and meter the background and light it at least twice the amount i.e. overexpose to what the meter tells you.
    Sandra is right, it was all sorted pre-digital way back in photography by steam!
    Good luck
    Rob

    aftertherain
    18 Jun 2006 - 11:01 AM
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    Take your meter reading off a grey card - some of the Lasolite reflectors have a true grey side.
    See here
    Or here

    Simple solution, to get a true white background light it! Use a flash to point at the background and when you take the photo the background will white out giving the look you want.

    Mark

    sabretalon
    26 Jun 2006 - 3:07 PM
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    Simpler solution, get a large soft box and put that behind your subject!

    The usual rule of thumb is to light the background 2 stops more than the subject. You may wish to adjust that to suit.

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