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kansalliskala
Joined: 19 Jul 2007
Posts: 5037
Location: Southern Finland countryside
Expire: 2016-12-30
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 Posted: Sun Apr 11, 2010 5:39 pm Post subject: Why the Jupiter 11 m42 version is so big? |
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kansalliskala wrote:
I mean you could just basically cut the Kiev version with a saw and put threads on the end and end up with a really tiny 135 lens? Is there an optical block difference with the versions?
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MF: Kodak DCS SLR/c; Samsung NX10; OM-10; Canon T50
Zuiko 28/3.5, Distagon 35/2.8; Yashica ML 50/2;
Zuiko 50/1.4; S-M-C 120/2.8; Zuiko 135/3.5; 200/5;
Tamron AD1 135/2.8, Soligor 180/3.5; Tamron AD1 300/5.6
Tamron zooms: 01A, Z-210
Yashicaflex C; Київ 4 + Юпитер 8, 11; Polaroid 100; Olympus XA; Yashica T3
Museum stuff: Certo-Phot; Tele-Edixon 135; Polaris 90-190; Asahi Bellows; Ixus IIs
Projects: Agfa Isolette III (no shutter), Canon AE-1D (no sensor),
Nikon D80 (dead), The "Peace Camera"
AF: Canon, Tokina, Sigma Video: JVC GZ-MG275E |
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Sun Apr 11, 2010 5:42 pm Post subject: |
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Attila wrote:
Perhaps longer register distance is the key ?! Need to make larger diameter to get enough light to SLR.
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sichko
Joined: 20 Jun 2008
Posts: 2475
Location: South West UK
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| Posted: Sun Apr 11, 2010 6:19 pm Post subject: Re: Why the Jupiter 11 m42 version is so big? |
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sichko wrote:
| kansalliskala wrote: |
| I mean you could just basically cut the Kiev version with a saw and put threads on the end and end up with a really tiny 135 lens? Is there an optical block difference with the versions? |
The difference in length between the Kiev version and the (M39) SLR version is 7 mm. This is comparable with the difference in register lengths (~ 10 mm). The difference in length between the Sharp (version of the Zorki) rangefinder version and the M39 SLR version is 17 mm which is very close to the difference in register lengths (16.4 mm).
http://zenit.istra.ru/archive/lenses/jupiter-11.html
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martinsmith99
Joined: 31 Aug 2008
Posts: 6950
Location: S Glos, UK
Expire: 2013-11-18
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| Posted: Sun Apr 11, 2010 6:25 pm Post subject: |
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martinsmith99 wrote:
I have the LTM version. It's long and skinny. Not a bad lens, actually quite good but not a must have.
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kansalliskala
Joined: 19 Jul 2007
Posts: 5037
Location: Southern Finland countryside
Expire: 2016-12-30
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| Posted: Mon Apr 12, 2010 6:37 am Post subject: |
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kansalliskala wrote:
I re-thougth this thing over nigth. It has to be because of different focusing procedure and mechanism. RF-cameras you usually set aperture first and then focus. SLR first focus then stop down. Focusing must not rotate when aperture is set. That is why Industar has so stiff focusing, it is not a fault but a feature. 
_________________
MF: Kodak DCS SLR/c; Samsung NX10; OM-10; Canon T50
Zuiko 28/3.5, Distagon 35/2.8; Yashica ML 50/2;
Zuiko 50/1.4; S-M-C 120/2.8; Zuiko 135/3.5; 200/5;
Tamron AD1 135/2.8, Soligor 180/3.5; Tamron AD1 300/5.6
Tamron zooms: 01A, Z-210
Yashicaflex C; Київ 4 + Юпитер 8, 11; Polaroid 100; Olympus XA; Yashica T3
Museum stuff: Certo-Phot; Tele-Edixon 135; Polaris 90-190; Asahi Bellows; Ixus IIs
Projects: Agfa Isolette III (no shutter), Canon AE-1D (no sensor),
Nikon D80 (dead), The "Peace Camera"
AF: Canon, Tokina, Sigma Video: JVC GZ-MG275E |
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