[pure-silver] Re: filter factor

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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