[LRflex] Re: Telyt 250/4 cams...illustrated
- From: Douglas Sharp <douglas.sharp@xxxxxx>
- To: leicareflex@xxxxxxxxxxxxx
- Date: Mon, 23 Jul 2007 20:18:31 +0200
Keith,
to illustrate what Doug mentions below, this what it should look like.
(Telyt-R # 2494419, even earlier than yours)
http://gallery.leica-users.org/v/DMS/New-Old-Pictures/_MG_6138-Edit.jpg.html
Top left (ringed in red) is the 3rd Cam (which isn't really a cam at
all) this is installed parallel to and inside of the sloping cam at the
left, the raised lug at the right hand end of this black painted,
stepped piece of metal should protrude above the surface of the actual
cam (unpainted) by about 0.5mm at the end of the cam, this lug should be
parallel to the cam and not bent out of shape.
The other, identical, cam at the right is the second of the "2 Cams"
found in all Leica-R 2 and 3 Cam mounts.
The bottom left is the aperture control lug.
If you set your lens to f22 and turn the aperture ring clockwise the "2
Cams" and the extra "3rd Cam" move clockwise in unison. The aperture lug
moves proportionally as the aperture opens - in fact it hardly seems to
move at all between f22 and f11.
Hope this helps
Cheers
Douglas
telyt@xxxxxxxxxxxxx wrote:
> KEITH LONGMORE <keith@SCAPEWHEEL=2ECO=2EUK> wrote:
>
>
>> If you hold the lens so that it faces away from you, and is the right=20=
>>
>
>
>> way up (i=2Ee=2E you look into the back of the lens, and the mounting bo=
>>
> ss=20
>
>> is at the bottom), there are two 1=2E5 mm thick curved lugs (cams=3F), o=
>>
> ne=20
>
>> at the top, right of centre; the other at the bottom, left of centre=2E=20=
>>
>
>
> The one at the top is the first cam, the one at the bottom is the second
> cam=2E
>
>
>> On the inside of the lower curved part is another, much thinner curved
>>
> piece
>
>> of metal, which has a small raised section coinciding with the high poin=
>>
> t
> of
>
>> the thick curved section (=2Ei=2Ee=2E at the bottom, left of centre=2E)=2E=
>>
>
>
> This is the third cam=2E
>
>
>> It doesn't appear to move, so I don't know what it does=2E
>>
>
> It should move with the other two cams as you move the aperture ring=2E
>
>
>> serial 2694809=2E
>>
>
> Certainly before 1979=2E
>
>
>> It does say Telyt-R on the bezel, so I don't believe it's for an SL or
>>
> SL2=2E
>
> All Leica reflex lenses are marked -R, even the ones for the Leicaflex
> Standard from 1965=2E
>
> Doug Herr
> Birdman of Sacramento
> http://www=2Ewildlightphoto=2Ecom
>
>
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>
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