pdccameras
Joined: 23 Aug 2009 Posts: 825 Location: Putnam, CT
Expire: 2014-08-11
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Posted: Tue Aug 09, 2011 2:32 am Post subject: |
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pdccameras wrote:
Hi there,
The 50 mm f/3.5 Skopar is a nice Tessar type lens. Very sharp stopped down a bit. Nice contrast and color.
You rotate the front cell of the lens to focus. There are distance markings around the side of the lens cell. You line up the focus distance with the little black diamond at 12:00.
This lens most likely came off of a Vito IIa and the shutter must be a Prontor SVS.
This is a better shutter than the cheaper Pronto shutter on the Vito B.
To set the shutter speed you rotate the knurled chrome ring that says Prontor SVS. Line up the black diamond on this ring with the speed you desire that is printed on the side of the shutter. Numbers like 1, 2, 10, 25, etc.
To cock the shutter, move the chrome lever that is sticking out of the of lens from the slot which sits between 2 and 100 on the shutter speed scale. When this lever is up near the 1/100 sec speed, the shutter is cocked. When it is down by 1/2 sec, it is released.
There is another, smaller chrome tab behind the shutter cocking lever. Use this lever to set the aperture.
To fire the shutter, push down the chrome lever sticking out of the side of the shutter at roughly 11:00 o'clock.
In terms of using this on an EOS DSLR, it ain't gonna be easy - to this best of my knowledge Prontors don 't have a T setting.
You could do this:
Set the lens shutter to B.
Trip the lens shutter and hold the shutter open. Focus the lens. Set the fstop. Fire your camera shutter while holding the lens shutter open.
Maybe the person who modified the lens took out the shutter blades?
Hope this helps,
Paul
That would simplify everything.
Hope this helps. _________________ Canon 5D Mii, Canon 40D, Canon 350D IR, Sony A7 Mii, Sony Alpha-6000, a ton of lenses: AF & MF and too many cameras to count, all formats: 110 - 4x5. |
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estudleon
Joined: 15 May 2008 Posts: 3754 Location: Argentina
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Posted: Tue Aug 09, 2011 12:47 pm Post subject: |
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estudleon wrote:
+1.
Only a little detail. Look at the front element for subtles clean marks. In that old lenses they will be seen like an opacity. That thing, if it's strong, may affect the IQ in terms of contrast.
Remember, as Perter said before, if the lens focus using only the front element, the focus process is done by modification of the focal distance .
Good luck
Rino. _________________ Konica 2,8/100
CZJ: 4/20, 2,4/35, 1,8/50 aus jena, 3,5/135MC, Pentacon 1,8/50
Pentax S-M-C-1,4/50
Helios 44-3
Mamiya 2,8/135
Misc. : jupiter 9
Stuff used:
A) SRL
Alpa 10 D - kern macro Switar 1,9/50 -black, Kilffit apochromat 2/100.
Asahi pentax spotmatic super takumar 1,4/50
Contaflex super B tessar 2,8/50 Pro-tessar 115
Leica R3 electronic summicron 2/50 elmarit 2,8/35
Konica Autoreflex 3 (2 black and chrome one), TC, T4. 2,8/24, 3,5/28 not MC and MC, 1,8/40, 1,4/50, 1,7/50 MC and not MC, 1,8/85, 3,2/135, 3,5/135, 4/200
Minolta XG9 2,8/35, 2/45, 3,5/135
Nikkormat FTn 1,4/50, 2,8/135
Fujica ST 801, 605, 705n. 3,5/19, 1,4/50, 1,8/55, 4/85, 3,5/135.
Praktica MTL 5 and a lot of M42 lenses.
Voigtlander. Bessamatic m, bessamatix de luxe, bessamatic cs, ultramatic and ultramatic cs.
Skoparex 3,5/35, skopagon 2/40, skopar 2,8/50, skopar X 2,8/50, super lanthar (out of catalogue) 2,8/50, dinarex 3,4/90, dinarex 4,8/100, super dinarex 4/135, super dinarex 4/200, zoomar 2,8/36-83, portrait lens 0, 1 and 2. Curtagon 4/28 and 2,8/35
Canon AV1, 1,8/50
Rolleiflex SL35 and SL35 E. 2,8/35 angulon, 2,8/35 distagon, 1,4/55 rolleinar, 1,8/50 planar, 4/135 tessar, 2,8/135 rolleinar, x2 rollei, M42 to rollei adap.
Etc.
RF
Yashica Minister III
Voightlander Vito, vitomatic I, Vito C, etc.
Leica M. M2, M3 (d.s.) and M4. Schenider 3,4/21, 2/35 summaron 2,8/35 (with eyes). Summicron 2/35 (8 elements with eyes), 2/35 chrome, 2/35 black, 1,4/35 pre asph and aspheric - old -, 2/40 summicron, 2,8/50 elmar, 2/50 7 elements, 2/50 DR, 2/50 - minolta version, 1,4/50 summilux 1966 version, 1,4/75 summilux, 2/90 large version, 2/90 reduced version of 1987, 2,8/90 elmarit large version, 4/135 elmar. |
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