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09/25/2005 04:33:41 PM · #1 |
When using a white card to set white balance, does it matter if the card is glossy or matte? Can I use photo quality ink jet paper?
Thanks,
Ken |
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09/25/2005 04:36:12 PM · #2 |
Someone is bound to correct me if I am wrong, but I believe that when setting WB, it is normal to use grey card?
Steve |
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09/25/2005 04:37:43 PM · #3 |
I thought you could shoot anything white for manual wb. Paper is just handy?
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09/25/2005 04:46:25 PM · #4 |
im not sure what you want to achive here.. but i think you got is wrong...
first: it doesnt matter coz you mattering the color and not the type of paper.. its better matt not to reflect any light...
but the purpuse of your custom wb at your camera is to tell the sensor at particular lighting.. what is white.. as you want to see it...
so there is not really a point setting a custom wb at day light.. just like in a studio shot when the bulb is yellow which afect the color of the image...
if you tell the sensor that "grey" is white as you see it.. it can give a different prespective of color for what is brighter than the grey.. it will take th grey and light grey as white..
you should try it.. i have set sevral setting for me and it all comes different.. here are two examples:
 
the wall behind the girl is the same wall.. different wb telling the sensor that the orange wall at bright lighting is white...
hope i helped...
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09/25/2005 05:01:51 PM · #5 |
Thanks for the replies despite my not stating my purpose. I'm trying to shoot my flourescent-lit aquarium but all three flourescent pre-sets on the camera give me a blue picture. The best setting is flash, but still not right. I'll experiment when the sun goes down....reflections off the tank are too much to deal with.
Thanks,
Ken |
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09/25/2005 05:25:41 PM · #6 |
| I use a coffee filter in front of the lens. Just cover the lens with it and take a white balance. Works perfectly also with Flash in multiple light sources in a room. |
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09/25/2005 05:43:40 PM · #7 |
| try setting it with an image with about the same shade of blue. it will correct down. Also you can use a yellow for white and all images wil shift to a blue makes for a neat effect kinda like using a filter but without the filter. |
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09/25/2005 06:25:57 PM · #8 |
| Both my Nikon & Olympus manuals say white. Grey cards are invaluable tools & their backs are white (at least Kodaks verison) so they can do dual duty. |
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09/25/2005 07:54:41 PM · #9 |
Setting the WB tells the camera how much red, blue and green are needed to compensate for the color of the light. A grey card that reflects 18% of the light that hits it is still reflecting the same ratio of red, blue and green -- the compensation will be the same. So, yes a grey card can be used. In the case of my camera, when setting WB it is tied to the exposure; it shouldn't be, but it is. This makes using a grey card for WB much more useful than a white one.
David
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09/25/2005 08:19:26 PM · #10 |
Using a grey card or white card will both yield good results. Using a white piece of paper may not do so, however. Some paper is actually "whiter than white", that is, it relies on whiteners that are based on substances that fluoresce under UV to make paper appear whiter than normally possible. These whiteners can fool the camera's white balance.
Your best bet is to use a card that's made for the purpose. They are made to be neutral and to retain their neutrality over their lifetime.
Your aquarium lights may also be part of the problem. Many fluorescent tubes sold for use in aquariums have a greater UV component than normal bulbs; it helps accentuate the colors of fish. That's why you still get a blue cast with fluorescent WB setting.
Message edited by author 2005-09-25 20:19:41.
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