The progression of Zuiko filter sizes is 49mm, 55mm, and 72mm, except for the
oddball 67mm size of the 35-80/2.8. To stack two filters on the 21/2, I use a
55-72mm step-up ring. This is not something I do often, although I have taken
some ridiculously saturated fall foliage shots using both a polarizer and an
enhancing filter.
Walt
--
"Anything more than 500 yards from
the car just isn't photogenic." --
Edward Weston
-------------- Original message from DACattani@xxxxxxx: --------------
>
> I'm sure this is common knowledge, but I notice quite a bit of vignetting in
> my 21mm 2.0 with UV and polarizer filters attached. I've been thinking of
> getting a step-up ring such that I can keep the UV filter attached when I
> need
> the polarizer. Any suggestions? 55 to 67? 55 to 72?
>
> Up to now, I've just been swapping them.
>
> Also thinking of getting a thin polarizer to try to "thin down". Does anyone
> have experience with this?
>
> Dave
>
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