Re: Colorsync-users Digest, Vol 2, Issue 507 -Filtering
Re: Colorsync-users Digest, Vol 2, Issue 507 -Filtering
- Subject: Re: Colorsync-users Digest, Vol 2, Issue 507 -Filtering
- From: Roger Breton <email@hidden>
- Date: Fri, 23 Dec 2005 09:45:18 -0500
> If you don't have so much as a single shot demonstrating the magical
> noise eliminating capabilities of your trusty old tungsten filter to
> show off, then what exactly are you basing this assertion on in the
> first place?
Nathan,
You see, this is exactly what I was refering to when I wrote a few days ago
as a reply to this thread that we'd need some kind of metric to qualify the
level of noise, so that we're all on the same wavelength. Someone wrote me
in the meantime to inform me that the wavelength nand matters in this
reporting. I did not have time to follow it up with that person but now that
I see your reply, and I too am curious how to quantify the noise reduction
as a result of using a blue filter to shoot under tungsten light. The idea
is sound, conceptually, but does one implement it, I don't know? Could we
agree on shooting the ColorChecker chart, compare the RGB channels under
tungsten WITH blue filter and WITHOUT blue filter? Would that make a
suitable test?
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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