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Re: [OM] polarizer filter vignetting

Subject: Re: [OM] polarizer filter vignetting
From: Lars Bergquist <timberwolf@xxxxxxxxxx>
Date: Sun, 26 Apr 1998 06:52:26 +0000
Hi Stuart,

>How about using a step up filter ring to bring the filter size up to 55mm.
>I bought a step up ring recently,  it is only a few mm thick.  I suspect I
>can use this with two stacked filters on a 28mm without vignetting,  but
>have not tried it yet....
>
>The other advantage of stepping up to 55mm is that I only need to keep one
>set of filters now, instead of both 55mm and 49mm.....

This is all right with pola filters and other special filters. But you cannot
use a lens shade of proper diameter. I know that there are many people
who think that with MC coating, this is not necessary. But they thought
and said the same when single-layer AR coatings were introduced, and
pros are conscientious shaders. They have seen to many pics ruined by
flare and bright spots (this is the instance when a bright spot is not quite
desirable ...)

Vänliga hälsningar/Best regards
Lars Bergquist
Välkommen till/Welcome to ...
<http://www.bahnhof.se/~timberwolf/>



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