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biggles3
Joined: 09 Nov 2009
Posts: 61
Location: Crickhowell, Wales
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 Posted: Fri Jun 16, 2023 9:51 am Post subject: Curious Chinon shape |
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biggles3 wrote:
A little while ago, I came across what, on the face of it, was a very boring, conventional short telephoto: a Chinon 135mm f2.8 in a M42 mount.
But its shape completely caught me out - it's conical. I'm sure some of you will know of others but until this one, I had not come across a 135mm lens with a conical barrel (and hood); indeed, I can't find any other such shaped optic among my 557 lenses. It is actually a very well-made piece of glass but I have no idea as to who actually manufactured it. Nearly all Chinon (inc. Auto Chinon) 135 f2.8s have a conventional shape and there are several versions of the type.
This one highlights its multicoating in the identification on the bezel and that works very nicely in controlling flare and helping to provide good contrast. I don't know its optical formula but it performs very nicely on digital cameras with few, if any, chroma issues. Images are very sharp in the centre and pretty impressive on the edges of the frame too.
This copy is attached to the rare version of the TL Electro X in black with the stylised Y logo, not to be confused with the TL Electro X ITS which only appeared in black and had the Electro roundel as its logo.
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RokkorDoctor
Joined: 27 Nov 2021
Posts: 1438
Location: Kent, UK
Expire: 2025-05-01
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| Posted: Fri Jun 16, 2023 7:26 pm Post subject: |
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RokkorDoctor wrote:
Not sure I see what is conical about the lens in the image shown above?
I do know there exists the Vivitar Series 1 135mm f/2.3 which has a conical focus grip:
http://makingnottaking.blogspot.com/2010/03/vivitar-series-1-135mm-f23.html
https://lens-db.com/vivitar-series-1-135mm-f23-vmc-auto-s-n-28xxxxxx-1973/
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Mark
SONY A7S, A7RII + dust-sealed modded Novoflex/Fotodiox/Rayqual MD-NEX adapters
Minolta SR-1, SRT-101/303, XD7/XD11, XGM, X700
Bronica SQAi
Ricoh GX100
Minolta majority of all Rokkor SR/AR/MC/MD models made
Sigma 14mm/3.5 for SR mount
Tamron SP 60B 300mm/2.8 (Adaptall)
Samyang T-S 24mm/3.5 (Nikon mount, DIY converted to SR mount)
Schneider-Kreuznach PC-Super-Angulon 28mm/2.8 (SR mount)
Bronica PS 35/40/50/65/80/110/135/150/180/200/250mm |
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biggles3
Joined: 09 Nov 2009
Posts: 61
Location: Crickhowell, Wales
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| Posted: Fri Jun 16, 2023 7:55 pm Post subject: |
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biggles3 wrote:
Perhaps you might find it is easier to accept my word on its conical shape from this angle. When it comes to a conical shape, the few that one finds are splaying outwards towards the front as shown in your two fine examples, especially if it's a fast lens with a wide front element. I hope you can see what to me is unusual in that this lens tapers smoothly from the aperture ring to the front, including the hood. I've yet to spot another lens which takes this shape.
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visualopsins
Joined: 05 Mar 2009
Posts: 11069
Location: California
Expire: 2025-04-11
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| Posted: Fri Jun 16, 2023 10:03 pm Post subject: |
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visualopsins wrote:
Quite an angle between the aperture and focus grips...lens diameter at aperture scale is larger then diameter above filter threads, a section of a cone missing the pointy tip.
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Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., 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
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX-A 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 (151B), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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Lloydy
Joined: 02 Sep 2009
Posts: 7798
Location: Ironbridge. UK.
Expire: 2022-01-01
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| Posted: Fri Jun 16, 2023 10:46 pm Post subject: |
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Lloydy wrote:
This series of conical / tapered Chinon lenses are reputed to be Tamron optics in Chinon bodies. And every one I've had has been very good. Currently I have the 300 / 5.6 and 200 / 3.5 and they are both excellent lenses, I like the style and the build quality, and optically they are very good. I'm trying to build the full set , but they are getting hard to find, and I recently missed a 135:
I have a copy of the Chinon brochure saved which lists all the lenses in this series, but I can't find it... I think there's a 28 or a 35, a 50, the 135 you have and the 200 and 300 I have.
This is my 300 / 5.6 alongside my Tamron Auto Adaptamatic 870AU 300 / 5.6. They do look very different, but the optics and aperture do look the same
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Lloydy
Joined: 02 Sep 2009
Posts: 7798
Location: Ironbridge. UK.
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| Posted: Fri Jun 16, 2023 11:20 pm Post subject: |
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Lloydy wrote:
Here's a few pictures of tapered Chinons spotted in the wild, there's a 40-15 Zoom, and a 28 that is branded as 'Expert' . And I still can't find the brochure...
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LENSES & CAMERAS FOR SALE.....
I have loads of stuff that I have to get rid of, if you see me commenting about something I have got and you want one, ask me.
My Flickr https://www.flickr.com/photos/mudplugga/
My ipernity -
http://www.ipernity.com/home/294337 |
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RokkorDoctor
Joined: 27 Nov 2021
Posts: 1438
Location: Kent, UK
Expire: 2025-05-01
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| Posted: Sat Jun 17, 2023 7:56 am Post subject: |
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RokkorDoctor wrote:
| biggles3 wrote: |
Perhaps you might find it is easier to accept my word on its conical shape from this angle. When it comes to a conical shape, the few that one finds are splaying outwards towards the front as shown in your two fine examples, especially if it's a fast lens with a wide front element. I hope you can see what to me is unusual in that this lens tapers smoothly from the aperture ring to the front, including the hood. I've yet to spot another lens which takes this shape.
#1
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Ah, now I see what you mean. Curious design decision.
Minolta also made a few tapered designs, but there the taper is limited to a short section with the DOF scale markings, the rest of the lens is normal cylindrical.
I wonder what Chinon's rationale was here, space saving?
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Mark
SONY A7S, A7RII + dust-sealed modded Novoflex/Fotodiox/Rayqual MD-NEX adapters
Minolta SR-1, SRT-101/303, XD7/XD11, XGM, X700
Bronica SQAi
Ricoh GX100
Minolta majority of all Rokkor SR/AR/MC/MD models made
Sigma 14mm/3.5 for SR mount
Tamron SP 60B 300mm/2.8 (Adaptall)
Samyang T-S 24mm/3.5 (Nikon mount, DIY converted to SR mount)
Schneider-Kreuznach PC-Super-Angulon 28mm/2.8 (SR mount)
Bronica PS 35/40/50/65/80/110/135/150/180/200/250mm |
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biggles3
Joined: 09 Nov 2009
Posts: 61
Location: Crickhowell, Wales
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| Posted: Sat Jun 17, 2023 8:41 am Post subject: |
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biggles3 wrote:
[quote="Lloydy"]Here's a few pictures of tapered Chinons spotted in the wild, there's a 40-15 Zoom, and a 28 that is branded as 'Expert' . And I still can't find the brochure...
quote]
Wow! Thank you very much for all the piccies of those lenses; I had no idea that Chinon produced an entire range with that unusual shape. There are a few there which could be rather tempting; that 300mm is quite a sight...
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