[LargeFormat] 300mm/f:4.5 Xenar mounting question --> Compound shutter sizes

[animal]

Thanks for your replies.I should have stated my question better.
I ment to ask to mount it on an auto aperture board .I have a behind the
lens shutter and the compound does not work at all.The aperture blades move
but stiffly.
Thanks again
simon jessurun

> >===== Original Message From Michael Briggs <MichaelBriggs@Earthlink.net>
> =====
> >On 24-Dec-2003 Ole Tjugen wrote:
> >
> >> My lens is in a Compound V/12+5FS shutter, which has a diameter of 12cm
or
> >> so.
> >
> >Compounds were made in sizes III, IV, and V?   What does "12+5FS" mean?
> >
> >--Michael
> >
>
> I clipped that information straight off the Schneider site, but it tallies
> with my Compur Repair manual:
> Compounds were made in sizes III, IV and V (or 3, 4, and 5) but with
several
> variations of each with different threads, cell spacing, and whatnot. To
all
> practical purposes the shutter of my 300mm Xenar is a size 5. Only nerds
like
> me and experts like the late Steve Grimes "need" to know the difference.
>
> Two of my other lenses are in Compound #3 shutters. A 360mm/f:5.5
Tele-Xenar
> in a III 7+3, and a 210mm/f:4.5 Xenar in a "normal" #3. I have no idea
what
> the specific denomination of this one is, but I will probably find out in
a
> few days - now that I've become aware of the question...
>
>
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