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06/24/2006 07:18:25 PM · #1 |
In film B&W photography, filters are commonly to manipulate contrast. For example a yellow filter will enhance the contrast between clouds and sky by darkening the latter. Orange and red filters will have a stronger effect.
If I'm shooting digital, would using those same filters provide similar effect after I convert to B&W?
I know if I use a red filter, that I'm going to come out with a red RAW file. But, will I get the same results that I get with Kodak T-max for instance?
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06/24/2006 08:04:23 PM · #2 |
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06/24/2006 08:09:41 PM · #3 |
The light coming thru a filter will be the same, regardless of what medium is used to capture it. When shooting B&W film, only tones are recorded so it had to be done gotten close with filters. With digital a color image is recorded and how you convert that to B&W makes all the difference. The same filtered results are available with much more control by using the channel mixer amoung other methods.
David
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06/24/2006 08:18:24 PM · #4 |
OH, ok, I got ya. Yeah, I know about the channel mixer method use it a lot.
My thought was that the red would block blues resulting in the deep black skies, but essentially that's what I'm doing in channel mixer anyway.
Thanks.
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06/24/2006 09:17:38 PM · #5 |
I tried something with the D70 (which doesn't have a B&W mode) sometime ago. I used an orange filter for some shots as an experiment.
What I got after converting to B&W was not what I would expect from T-MAX.
** I did not try many different scenes and conditions.
Here's one of them (not a straight B&W conversion, as you can see):
I know that it doesnt' show what you are looking for, but I have been thinking about trying it again with B&W mode on D200, just to see what I can get from it.
I think what I am trying to find out is what you are looking for as well. No results to show, but thought I'd share.
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06/24/2006 09:43:24 PM · #6 |
I heard somewhere that using a filter can interfere with things... I have not tried it though...
Remember that the camera itself is also using filters, one on each photosite... this means that you will be decreasing the amount of light entering the sensor by a fair bit... What I'm thinking is that this will increase the noise the same way as underexposing would... I've always understood that if you shoot exposed to the left, things get a lot grainier... if you expose to the right, your shadows look much cleaner..
I don't really know... only one way to find out really, right?
I recently played with the channel mixer for low saturation shots, using a suggestion by someone in the forums to use luminosity from B&W processed shots...
Quite interesting how it impacted the pics... Chalk another one up for the channel mixer... |
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