In a message dated 1/29/01 10:33:36 PM Eastern Standard Time,
[EMAIL PROTECTED] writes:
<< The other issue is use of filters. Pentax comes with built-in yellow,
orange, skylight, and UV. Tamron and Sigma has a slot for gelatin filters.
The Ultra-wide Heliar (12mm) has an optional 77mm filter adapter. In
practical terms that means
that only Ultra-wide Heliar will allow you to use a polarizer (but it's
still a pain). >>
Someone makes a "wide angle" Polarizer, a filter that is evenly dark in the
center then lightens at the edge (like a gradient filter) to compensate for
light fall-off?
Mafud
[EMAIL PROTECTED]
[EMAIL PROTECTED]
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