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Old May 8, 2004, 12:09 PM   #1
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I recently bought a Hoya Circular Polarizing filter to use withmy 300D (& my 2 film cameras). I have also considered buying a B+W Tobacco Filter. I was told by a friend who just got the D70 that if you go out & buy any of these filters (other than the Polarizers) that the automatic white balance will correct itself & therefore these filters may or may not work with Digital. This sorta makes sense. I see no problems with these filters when I use say my EOS-3. Maybe we need to try these filters out first to see if they will work on the DSLR's? Or . . . . do I re-set the automatic white balance??

Your comments will be appreciated.
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Old May 8, 2004, 12:32 PM   #2
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The only way I see this happening is if you have your camera on auto wb. Auto wb will look at something that's supposed to be white, then adjust the RGB channels until it actually is white. Come to think of it, it might only adjust the blue channel. (the new 1D Mark II adjusts blue and green)At any rate I never use auto wb because it's pretty much a guarantee that the color will be different every shot and none of them will be quite right. You should use the wb mode for the type of light you are shooting in (tungsten, daylight, etc) or you can set it using a gray or white card. So as long as you are using a 'fixed' wb then the camera won't try to get rid of the filter. Personally I think the effect of a tobacco filter is much stronger than the auto wb reduction anyway so it wouldn't matter. If worse comes to worse you could shoot in raw, then tweak the wb later. I personally wouldn't spend the money on a tobacco filter because the same effect can be done in photoshop CS, but since you have 2 film cameras to use it on I say go for it. If you get it post some pictures so we can see how it turns out.
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Old May 9, 2004, 9:49 AM   #3
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Thanks a lot for this info LT. You seem to be up on a Lot of this stuff.

Since I do not have Photoshop CS (not in my budget) I will opt for the Tobacco filter soon. I would like to use it on my EOS-3 loaded with some Provia 100F & my 20-35 lens or get one for the 28-135 - these filters - all different sizes. That was 1 more thing I liked about my old FD stuff - 85% of my lenses used 55mm filters! Now I have 4 lenses & 4 different filter sizes!
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Old May 10, 2004, 8:41 PM   #4
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Well, with all thise filter sizes maybe you should just but all your filters for the largest size, then get a couple of step-up rings to fit them onto the smaller lenses.
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