On 28 Mar 2004 at 18:30, Konstantinos Bibis wrote:
> -------------------
> > What is the difference between the B&W UV uncoated vs the B&W UV
> > multi coated filter? Will it make a difference in picture quality on
> > a Canon consumer EF 75-300 f/4-5.6 III?
> >
> > --------------------------------------------
>
> I have a similar question. Some people argue that a UV can protect the
> lens and some others that putting anything in front of your lens
> knocks points off performance. I've read stories that people had
> focusing problems with certain UV filters. I recently got the Sigma
> 70-200 /2.8 HSM and thinking wether i should use a UV. At the moment i
> don't;but i'm using the hood that came with it for protection as well.
> But still i'm uncomfortable when handling with the thought that front
> element mayu be scratched or when i have to clean it to gewt the dust
> off i scratch it by cleaning it or something like that. Has anybody
> solid experience of a decent quality (Hoya,Sigma or BW) (multicoated?)
> filter causing any focusing problems or image quality degradation ?
As for mechanical protection, ignoring cleaning/rubbing/splashing:
consider a Cokin filterholder, permanently mounted.
Much better lens-cap too, only downside is the slightly larger
size....but no damage to lens front if you rest it on
table/concrete/gate/pole, or even put it upside down on a table when
changing lenses (although I prefer the 'work area' of a PhotoTrekker
folded open (with an additional foampad-lid covering the lower half
(wanted more protection when skiing, folds/attaches between inner and
outer layer of the PhotoTrekker-bottom)).
--
Bye,
Willem-Jan Markerink
The desire to understand
is sometimes far less intelligent than
the inability to understand
<[EMAIL PROTECTED]>
[note: 'a-one' & 'en-el'!]
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