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caspert79
Joined: 31 Oct 2010 Posts: 2901 Location: The Netherlands
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Posted: Sat Jul 04, 2020 5:19 pm Post subject: |
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caspert79 wrote:
ylyad wrote: |
So:
- Canon nFD 50/1.4 - lovely all-around lens
- Tokina RMC 135/2.8 - I quickly did a couple test shots, it looks like a damn fine gem |
Yup it’s a good one. |
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sergtum
Joined: 14 Nov 2016 Posts: 735
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Posted: Mon Jul 06, 2020 12:38 am Post subject: |
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sergtum wrote:
DSC00350 by Mr TTT, on Flickr |
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vivaldibow
Joined: 23 Jun 2018 Posts: 835
Expire: 2021-03-09
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Posted: Mon Jul 06, 2020 5:45 pm Post subject: |
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vivaldibow wrote:
a Mamiya 58mm f/1.7. Said to be front element radioactive in M42 mount. Eager to see if my copy is Exakta or M42 mount |
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caspert79
Joined: 31 Oct 2010 Posts: 2901 Location: The Netherlands
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Posted: Mon Jul 06, 2020 6:35 pm Post subject: |
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caspert79 wrote:
vivaldibow wrote: |
a Mamiya 58mm f/1.7. Said to be front element radioactive in M42 mount. Eager to see if my copy is Exakta or M42 mount |
Curious about its performance! |
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stevemark
Joined: 29 Apr 2011 Posts: 3751 Location: Switzerland
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Posted: Mon Jul 06, 2020 6:59 pm Post subject: |
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stevemark wrote:
vivaldibow wrote: |
a Mamiya 58mm f/1.7. Said to be front element radioactive in M42 mount. Eager to see if my copy is Exakta or M42 mount |
Interesting lens. I got one together with the iconic early "Mamiya" SLR (with kind of an Exacta bayonet):
That beast seems to be a quite rare SLR!
S _________________ www.artaphot.ch |
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Alun Thomas
Joined: 20 Aug 2018 Posts: 614 Location: New Zealand
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Posted: Mon Jul 06, 2020 7:20 pm Post subject: |
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Alun Thomas wrote:
stevemark wrote: |
vivaldibow wrote: |
a Mamiya 58mm f/1.7. Said to be front element radioactive in M42 mount. Eager to see if my copy is Exakta or M42 mount |
Interesting lens. I got one together with the iconic early "Mamiya" SLR (with kind of an Exacta bayonet):
That beast seems to be a quite rare SLR!
S |
It can also be found (in M42) branded as an Argus camera. Additionally, there is a 5.8cm F/1.7 that was sold for the Yashica Pentamatic II as detailed here: https://yashicasailorboy.com/tag/f-1-7-5-8cm-lens/
The writer there thinks that lens may be a Zunow lens originally, I wonder how optically similar it is to the Mamiya lens. |
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walter g
Joined: 20 Feb 2010 Posts: 2463 Location: NC, USA
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Posted: Mon Jul 06, 2020 10:39 pm Post subject: |
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walter g wrote:
I've been on a Canon FD kick lately. So I have a Canon FD SSC 200mm f4 lens coming. _________________
Main cameras
Panasonic G5,Nikon J1,Pentax Q10,Sony Nex 6
Minolta MC W SI 2.5/28, MD 2.8/28, MC W SG 3.5/28, MC Celtic 3.5/28, MC W HG 2.8/35, MD Celtic 2.8/35, QE 4/35, Rokkor X 2/45, MC Rokkor X PG 1.4/50, MC Rokkor X PG 1.7/50, MD Rokkor X 1.7/50, MD 2/50, MC Rokkor PF 1.7/55, MC Rokkor PF 1.9/55, Auto Tele Rokkor PG 2.8/135, MC Tele Rokkor QD 3.5/135, TC 4/135, MC Celtic 4/200, MC Tele Rokkor PE 4.5/200
MD 28-70 f3.5-4.8, MD Macro 35-70 f3.5, Md 70-210 f4, MD Rokkor X 75-200 f4.5, MD 100-200 f5.6
Nikon Nikkor 4/20, O Auto 2/35, S Auto 1.4/50..... Miranda Auto 2.8/28, Auto 2.8/35, Auto 1.4/50, Auto EC 1.4/50, Auto 1.8/50, Auto EC 1.8/50,Auto 1.9/50, Auto 3.5/135
Various Soligor,Sun,Fujita,Komura,Spitatone, etc. Lenses
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Oldhand
Joined: 01 Apr 2013 Posts: 6006 Location: Mid North Coast NSW - Australia
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Posted: Mon Jul 06, 2020 11:26 pm Post subject: |
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Oldhand wrote:
Second time lucky?
I hope so.
The last one was defective and had to be returned.
T
#1
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vivaldibow
Joined: 23 Jun 2018 Posts: 835
Expire: 2021-03-09
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Posted: Mon Jul 06, 2020 11:43 pm Post subject: |
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vivaldibow wrote:
Alun Thomas wrote: |
stevemark wrote: |
vivaldibow wrote: |
a Mamiya 58mm f/1.7. Said to be front element radioactive in M42 mount. Eager to see if my copy is Exakta or M42 mount |
Interesting lens. I got one together with the iconic early "Mamiya" SLR (with kind of an Exacta bayonet):
That beast seems to be a quite rare SLR!
S |
It can also be found (in M42) branded as an Argus camera. Additionally, there is a 5.8cm F/1.7 that was sold for the Yashica Pentamatic II as detailed here: https://yashicasailorboy.com/tag/f-1-7-5-8cm-lens/
The writer there thinks that lens may be a Zunow lens originally, I wonder how optically similar it is to the Mamiya lens. |
Steve, mine will come with a Sear 32B, said to be a rebadged Mamiya Prismat, the one shown in your photo.
Alun, I've heard Argus also has a camera with this lens, but somehow the mount is different (other than M42 or Exakta). I've read that article before. The Pentamatic 5.8cm f/1.7 does look a lot like this one, especially the infinity mark (the yellow triangle). |
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kds315*
Joined: 12 Mar 2008 Posts: 16497 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Tue Jul 07, 2020 7:12 am Post subject: |
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kds315* wrote:
Supposed to be a good one... _________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
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stevemark
Joined: 29 Apr 2011 Posts: 3751 Location: Switzerland
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Posted: Tue Jul 07, 2020 3:06 pm Post subject: |
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stevemark wrote:
vivaldibow wrote: |
stevemark wrote: |
Interesting lens. I got one together with the iconic early "Mamiya" SLR (with kind of an Exacta bayonet):
That beast seems to be a quite rare SLR!
S |
Steve, mine will come with a Sear 32B, said to be a rebadged Mamiya Prismat, the one shown in your photo.
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The Sears 32B looks completely different to my "Mamiya" SLR. It's far more common than the original "Mamyia".
The Herron website shows both cameras (and the Mamiya Prismat NP from which the Seras 32B was derived).
http://herron.50megs.com/prismat.htm
Your Mamiya 1.7/5.8 cm lens, however, may well be the same as mine!
Stephan _________________ www.artaphot.ch |
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stevemark
Joined: 29 Apr 2011 Posts: 3751 Location: Switzerland
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Posted: Tue Jul 07, 2020 3:09 pm Post subject: |
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stevemark wrote:
walter g wrote: |
I've been on a Canon FD kick lately. So I have a Canon FD SSC 200mm f4 lens coming. |
A well machined, heavy 4/200mm lens with a relatively low contrast, but good detail resolution and not too pronounced lateral CAs. You'll enjoy it, i guess
S _________________ www.artaphot.ch |
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vivaldibow
Joined: 23 Jun 2018 Posts: 835
Expire: 2021-03-09
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Posted: Tue Jul 07, 2020 4:28 pm Post subject: |
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vivaldibow wrote:
stevemark wrote: |
vivaldibow wrote: |
stevemark wrote: |
Interesting lens. I got one together with the iconic early "Mamiya" SLR (with kind of an Exacta bayonet):
That beast seems to be a quite rare SLR!
S |
Steve, mine will come with a Sear 32B, said to be a rebadged Mamiya Prismat, the one shown in your photo.
|
The Sears 32B looks completely different to my "Mamiya" SLR. It's far more common than the original "Mamyia".
The Herron website shows both cameras (and the Mamiya Prismat NP from which the Seras 32B was derived).
http://herron.50megs.com/prismat.htm
Your Mamiya 1.7/5.8 cm lens, however, may well be the same as mine!
Stephan |
Yes, I noticed they are different in shape when I did my research. Thanks for the website. Interestingly, the author says the Sears 32B is a rebranded Mamiya Primsmat NP. See my red circle. I, however, didn't read the post very carefully so I might miss something, as the camera is not what I am interested in, the lens is. Yes, they should be the same lens.
#1
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walter g
Joined: 20 Feb 2010 Posts: 2463 Location: NC, USA
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Posted: Tue Jul 07, 2020 5:57 pm Post subject: |
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walter g wrote:
stevemark wrote: |
walter g wrote: |
I've been on a Canon FD kick lately. So I have a Canon FD SSC 200mm f4 lens coming. |
A well machined, heavy 4/200mm lens with a relatively low contrast, but good detail resolution and not too pronounced lateral CAs. You'll enjoy it, i guess
S |
I couldn't decide if I wanted the lens or not.
I would of preferred to try the New FD version.
Anyway it had a $20 starting bid and cheap shipping, so I put a $20 bid on it and won, if I'm not happy with it, I'll throw it back on eBay. _________________
Main cameras
Panasonic G5,Nikon J1,Pentax Q10,Sony Nex 6
Minolta MC W SI 2.5/28, MD 2.8/28, MC W SG 3.5/28, MC Celtic 3.5/28, MC W HG 2.8/35, MD Celtic 2.8/35, QE 4/35, Rokkor X 2/45, MC Rokkor X PG 1.4/50, MC Rokkor X PG 1.7/50, MD Rokkor X 1.7/50, MD 2/50, MC Rokkor PF 1.7/55, MC Rokkor PF 1.9/55, Auto Tele Rokkor PG 2.8/135, MC Tele Rokkor QD 3.5/135, TC 4/135, MC Celtic 4/200, MC Tele Rokkor PE 4.5/200
MD 28-70 f3.5-4.8, MD Macro 35-70 f3.5, Md 70-210 f4, MD Rokkor X 75-200 f4.5, MD 100-200 f5.6
Nikon Nikkor 4/20, O Auto 2/35, S Auto 1.4/50..... Miranda Auto 2.8/28, Auto 2.8/35, Auto 1.4/50, Auto EC 1.4/50, Auto 1.8/50, Auto EC 1.8/50,Auto 1.9/50, Auto 3.5/135
Various Soligor,Sun,Fujita,Komura,Spitatone, etc. Lenses
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KEO
Joined: 27 Sep 2018 Posts: 756 Location: USA
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Posted: Tue Jul 07, 2020 6:47 pm Post subject: |
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KEO wrote:
vivaldibow wrote: |
a Mamiya 58mm f/1.7. Said to be front element radioactive in M42 mount. Eager to see if my copy is Exakta or M42 mount |
I've got one of the M42 versions. I have two Auto Mamiya Sekor 55 1.4s, and several Auto Mamiya Sekor 55 1.8s, and I like the 58 1.7 better than any of them.
The M42 version seems to have a weak aperture mechanism, because I almost never find one with a working aperture. Even mine is broken. It opens just fine, but I have to unscrew the rear optical block to close it down.
Still, it's an excellent lens and I'm always looking to pick up another. I'd also like to know more about it. Information is scarce. |
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caspert79
Joined: 31 Oct 2010 Posts: 2901 Location: The Netherlands
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Posted: Tue Jul 07, 2020 6:55 pm Post subject: |
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caspert79 wrote:
Just bought an auto-Takumar 55mm f/2. It looks like my Yashinon 5cm f/2’s twin brother. |
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stevemark
Joined: 29 Apr 2011 Posts: 3751 Location: Switzerland
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Posted: Tue Jul 07, 2020 10:06 pm Post subject: |
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stevemark wrote:
vivaldibow wrote: |
Yes, I noticed they are different in shape when I did my research. Thanks for the website. Interestingly, the author says the Sears 32B is a rebranded Mamiya Primsmat NP. See my red circle. I, however, didn't read the post very carefully so I might miss something, as the camera is not what I am interested in, the lens is. Yes, they should be the same lens.
#1
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The Sears 32B and the Mamiya Prismat NP look different, but they may well share the same basic construction. My "Mamiya SLR" however is probably more a kind of a prototype or - maybe - part of an early pre-production. I have been searching the net quite extensively for images of the "Mamiya SLR", but i'm aware of only one person (apart from myself and the previous owner of my sample) who really has seen a "Mamiya SLR". Note that even M. Herron has never owned a real Mamiya SLR! It's design remembers me, to some extent, to the Exacta Varex ...
_________________ www.artaphot.ch |
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visualopsins
Joined: 05 Mar 2009 Posts: 10463 Location: California
Expire: 2021-06-22
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Posted: Tue Jul 07, 2020 11:10 pm Post subject: |
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visualopsins wrote:
caspert79 wrote: |
Just bought an auto-Takumar 55mm f/2. It looks like my Yashinon 5cm f/2’s twin brother. |
A good one imho. White distance scale with "1:2 f=55mm" on name ring or yellow distances with "1:2 / 55mm"? _________________ ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony A7Rii, Spotmatics II, F, and ESII, Nikon P4
M42 Asahi Optical Co., Lenses:
Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200
Tele-Takumar 1:5.6/200, 1:6.3/300
Macro-Takumar 1:4/50
Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm
Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element),
Super-Multi-Coated Fisheye-TAKUMAR 1:4/17
Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500
Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100
Super-Multi-Coated Bellows-TAKUMAR 1:4/100
SMC TAKUMAR 1:1.4/50, 1:1.8/55
Other lenses:
Carl Zeiss Jena Flektogon 2.4/35
SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto
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walter g
Joined: 20 Feb 2010 Posts: 2463 Location: NC, USA
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Posted: Wed Jul 08, 2020 4:11 am Post subject: |
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walter g wrote:
I just bought the parts / as is Canon New FD 17mm f4 lens off of Ebay. I hope I wasn't wearing my stupid hat when I bought it.
We shall see. _________________
Main cameras
Panasonic G5,Nikon J1,Pentax Q10,Sony Nex 6
Minolta MC W SI 2.5/28, MD 2.8/28, MC W SG 3.5/28, MC Celtic 3.5/28, MC W HG 2.8/35, MD Celtic 2.8/35, QE 4/35, Rokkor X 2/45, MC Rokkor X PG 1.4/50, MC Rokkor X PG 1.7/50, MD Rokkor X 1.7/50, MD 2/50, MC Rokkor PF 1.7/55, MC Rokkor PF 1.9/55, Auto Tele Rokkor PG 2.8/135, MC Tele Rokkor QD 3.5/135, TC 4/135, MC Celtic 4/200, MC Tele Rokkor PE 4.5/200
MD 28-70 f3.5-4.8, MD Macro 35-70 f3.5, Md 70-210 f4, MD Rokkor X 75-200 f4.5, MD 100-200 f5.6
Nikon Nikkor 4/20, O Auto 2/35, S Auto 1.4/50..... Miranda Auto 2.8/28, Auto 2.8/35, Auto 1.4/50, Auto EC 1.4/50, Auto 1.8/50, Auto EC 1.8/50,Auto 1.9/50, Auto 3.5/135
Various Soligor,Sun,Fujita,Komura,Spitatone, etc. Lenses
Last edited by walter g on Wed Jul 08, 2020 4:52 am; edited 1 time in total |
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caspert79
Joined: 31 Oct 2010 Posts: 2901 Location: The Netherlands
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Posted: Wed Jul 08, 2020 4:49 am Post subject: |
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caspert79 wrote:
visualopsins wrote: |
caspert79 wrote: |
Just bought an auto-Takumar 55mm f/2. It looks like my Yashinon 5cm f/2’s twin brother. |
A good one imho. White distance scale with "1:2 f=55mm" on name ring or yellow distances with "1:2 / 55mm"? |
Judging from the picture it has meters in yellow, and feet in white. And it says "1:2/55". |
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visualopsins
Joined: 05 Mar 2009 Posts: 10463 Location: California
Expire: 2021-06-22
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Posted: Wed Jul 08, 2020 1:36 pm Post subject: |
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visualopsins wrote:
caspert79 wrote: |
visualopsins wrote: |
caspert79 wrote: |
Just bought an auto-Takumar 55mm f/2. It looks like my Yashinon 5cm f/2’s twin brother. |
A good one imho. White distance scale with "1:2 f=55mm" on name ring or yellow distances with "1:2 / 55mm"? |
Judging from the picture it has meters in yellow, and feet in white. And it says "1:2/55". |
That would be an unknown variation! Known variations have white or yellow m & blue ft distance markings. When you get the lens please verify. Will be appreciated! _________________ ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony A7Rii, Spotmatics II, F, and ESII, Nikon P4
M42 Asahi Optical Co., Lenses:
Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200
Tele-Takumar 1:5.6/200, 1:6.3/300
Macro-Takumar 1:4/50
Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm
Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element),
Super-Multi-Coated Fisheye-TAKUMAR 1:4/17
Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500
Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100
Super-Multi-Coated Bellows-TAKUMAR 1:4/100
SMC TAKUMAR 1:1.4/50, 1:1.8/55
Other lenses:
Carl Zeiss Jena Flektogon 2.4/35
SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto
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caspert79
Joined: 31 Oct 2010 Posts: 2901 Location: The Netherlands
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Posted: Wed Jul 08, 2020 1:41 pm Post subject: |
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caspert79 wrote:
visualopsins wrote: |
caspert79 wrote: |
visualopsins wrote: |
caspert79 wrote: |
Just bought an auto-Takumar 55mm f/2. It looks like my Yashinon 5cm f/2’s twin brother. |
A good one imho. White distance scale with "1:2 f=55mm" on name ring or yellow distances with "1:2 / 55mm"? |
Judging from the picture it has meters in yellow, and feet in white. And it says "1:2/55". |
That would be an unknown variation! Known variations have white or yellow m & blue ft distance markings. When you get the lens please verify. Will be appreciated! |
I will let you know! |
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stevemark
Joined: 29 Apr 2011 Posts: 3751 Location: Switzerland
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Posted: Wed Jul 08, 2020 10:30 pm Post subject: |
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stevemark wrote:
Enna Tele-Ennalyt 4.5/240mm (M42).
The lens, shown here with its smaller 2.8/135mm sibling, is tiny (given its focal length of 240mm). Just about 12.7 cm long, and with a 52mm filter thread, its performance is barely mediocre. Details on that will follow. As most German lenses from the 1950s and early 1960s, its barrel is very well made. There seem to be quite a few versions of the 240mm/4.5 Tele-Ennalyt; this one has a rather simplistic, yet somehow stylish lens barrel with an minimal focusing distance (MFD) of 6 meters (!!). Well, obviously a landscape lens ?!? Maybe, maybe not -- The performance on 24MP FF is so poor that I certainly would recommend to not use it for landscapes! Central sharpness and contrast at f4.5 are rather lousy, and the corners are simply fuzzy. Stopping down to f11 doesn't change much. To make it short - as others here have reported, the lens isn't stellar, an neither is the Tele-Ennalyt 2.8/135mm ...
Stephan _________________ www.artaphot.ch |
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vivaldibow
Joined: 23 Jun 2018 Posts: 835
Expire: 2021-03-09
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Posted: Thu Jul 09, 2020 3:59 am Post subject: |
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vivaldibow wrote:
KEO wrote: |
vivaldibow wrote: |
a Mamiya 58mm f/1.7. Said to be front element radioactive in M42 mount. Eager to see if my copy is Exakta or M42 mount |
I've got one of the M42 versions. I have two Auto Mamiya Sekor 55 1.4s, and several Auto Mamiya Sekor 55 1.8s, and I like the 58 1.7 better than any of them.
The M42 version seems to have a weak aperture mechanism, because I almost never find one with a working aperture. Even mine is broken. It opens just fine, but I have to unscrew the rear optical block to close it down.
Still, it's an excellent lens and I'm always looking to pick up another. I'd also like to know more about it. Information is scarce. |
Mine arrived in excellent condition, on a Sears 32B camera. I took off the lens and noticed it is the Exakta mount. But I haven't figured it out how to stop down the aperture. It has the "complicated" arm design as in some of the German Exakta mount lenses. Since you mentioned you never find one with working aperture, I suspect mine could be faulty as well. |
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stevemark
Joined: 29 Apr 2011 Posts: 3751 Location: Switzerland
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Posted: Thu Jul 09, 2020 12:19 pm Post subject: |
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stevemark wrote:
vivaldibow wrote: |
Mine arrived in excellent condition. I took off the lens and noticed it is the Exakta mount. But I haven't figured it out how to stop down the aperture. It has the "complicated" arm design as in some of the German Exakta mount lenses. Since you mentioned you never find one with working aperture, I suspect mine could be faulty as well. |
While the aperture mechanism a bit slow, it works on my Exakta mount Mamiya-Sekor F.C. 1:1.7 f=55mm lens.
1) Cock the (silver colored) aperture mechanism on the left side of the lens ("left" when looking through the viewfinder of the camera)
2) adjust the aperture ring to the desired value by first pushing the small silver colored button on the lower side of the aperture ring and then turning the aperture ring
3) Take the lens off the camera and push the small plug on the back side (!!) of the aperture lever; it will close the aperture to the desired value
4) if you want to re-open the aperture, just start with 1) again!
Stephan _________________ www.artaphot.ch |
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