On Tue, 1 Jul 2003 10:28:03 -0500
"Tom Albright" <n5ksk3@xxxxxxx> wrote:
> >I then bought a used
> > vivitar 135/2.8, which was somewhat better, and took a 55mm
> > filter rather than the odd 52mm of the CPC.
>
> Since when is 52mm odd? That's what I am currently sizing at, via
> two 52mm lenses, and one 49mm with a step-up adapter.
>
Well, since the Zuiko series appeared :) In general, Zuiko lenses
fall in two "series", a "49mm" and a "55mm" filter thread. Pretty
consistantly from (I think) 21 to 200mm (the 180mm's excluded), most
focal length comes in both a 49mm filter thread and a 55mm filter
thread. E.g. 24/2.8 vs. 24/2, 35/2.8 vs. 35/2 and so on (there are
exceptions: 90/2, 85/2, 55/1.2, for example...)
The serious zuikoholic will therefore have at least two kits: one
with a full set of lenses with 49mm filter threads, another with a
full set of lenses with 55mm filter threads. :)
For all I know, there was never made a Zuiko lens that took 52mm
filters. Hence, among Zuikoholics, 52mm is indeed an odd filter size
:)
Interrestingly enough, it seems that 49mm and 55mm are indeed very
popular sizes, also among other brands.
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