And further to that, I just realised that several of the Leitz lenses
come with hoods that take 'Series' filters, many only available from
Leica themselves or the German makes (like my CL 40mm and 90mm lenses
with hoods that take Series 5.5 and old 90mm R Elmarit with series 8
holding hood). Hard to imagine them offering such implicit approval
for something that will degrade the images!
Andrew Fildes
afildes@xxxxxxxxxxxxx
On 21/04/2007, at 3:37 PM, Andrew Fildes wrote:
>
> There are some lenses that come with 'dedicated' filters. And some of
> the Canon big whites are reputed to have a flat, no effect front
> element for protective purposes. In those cases, the effect of the
> filter is built into the formulation so it should be used, like the
> 'normal' filter in rear mount Tamron/Sigma 500mm mirrors and
> superwides.
> Andrew Fildes
> afildes@xxxxxxxxxxxxx
>
>
>
> On 21/04/2007, at 2:29 PM, Moose wrote:
>
>> It is theoretically possible to design a filter for any given prime
>> lens
>> that doesn't suffer from that problem, but then it's really a special
>> lens with zero focal length effect and no abberations. And so
>> expensive
>> you would need a filter for it in dangerous conditions. :-)
>
>
>
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