[pure-silver] Re: filter factor
- From: Claudio Bonavolta <claudio@xxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Sun, 01 Oct 2006 12:37:53 +0200
Jim Brick a écrit :
At 06:53 AM 9/30/2006 -0500, Shannon Stoney wrote:
On the BHphotovideo site, there are some little pictures like this
with each filter, but they are hard to really decipher because they
are so small.
--shannon
Totally useless. Don't even attempt to glean any info from them. They
probably are not even correct for the given filter.
Call Schneider Optics at 516-761-5000 and ask for the B+W filter
catalog. It has pretty good representations of what the various
filters do. It also lists the filter factor for their filters, which,
is a really close starting point, again, for the given B+W filter.
Jim
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Schneider's handbook (there is more inside than just filter factors) is
available here:
http://www.schneiderkreuznach.com/pdf/filter/B+W_filter_handbook.pdf
--
Claudio Bonavolta
http://www.bonavolta.ch
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