Archived from groups: rec.photo.digital (
More info?)
Michael Meissner wrote:
> NC <me@home.com> writes:
>
>
>>Does using a 72mm circular polarising filter on a 58mm lens via an adapter
>>ring have any impact on image quality ?
>
>
> Only if the ring is small enough that it causes vignetting (you should be ok
> with a 58->72 step up ring), or alternatively use of a step up ring causes you
> not to use the hood that came with the lens, and your lens flare because you
> are shooting into the sun.
Hmm, it could also make the flare worse by drawing in light from the
edges conceivably. So flare is the drawback of a step up filter
arrangement unless you could put a big hood on the end.
> I assume you already have the CP filter? If not,
> note that the quality CP filters tend to get rather expensive as you get to the
> larger sizes.
>
> More to the point, the filter you use will have an impact on image quality.
>
--
Paul Furman
http/www.edgehill.net/1
san francisco native plants