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Univer
Joined: 30 Jun 2009
Posts: 282
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 Posted: Thu May 20, 2010 5:27 pm Post subject: K-Mount Adapter: What Exactly Did I Buy? |
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Univer wrote:
Hi All,
A while back I had one of those irrational impulses, and bought an eBay item mysteriously described as a "K-mount adapter" - nothing more. It cost practically nothing, so I figured the risk was minimal.
Well, the description, sketchy though it was, is correct: it is a K-mount adapter. But after looking around on the Internet, off and on, for a few months, I still don't know what it's intended to adapt. Hopefully the photos - a few quick lunchtime windowsill snaps - will show enough detail to enable someone to identify it.
The camera side is standard Pentax K. The other side is a bayonet fitting, with three equally-spaced tongues; one of them is notched. The metal knob on the side, when loosened, allows the outer ring to be rotated through a range of click-stopped positions (like a Pentax 6x7 to K or M42 adapter). There's a white dot to help orient the adapter to whatever attaches to it. As I hope you can see, there's an interior baffle.
My guess (and it's only a guess!) is that this adapter is meant to adapt a medium-format lens - seems like it might be some sort of breech-mount (?) - to Pentax K. But so far I haven't been able to match it with a specific mount. Detailed photos of the various medium-format mounts are not as easy to find as one might think. Then again, maybe this adapter is incomplete, and the frontmost portion is simply missing.
Apologies in advance, if this is one of those painfully obvious answers, for wasting time and bandwidth. Can some kind soul tell me what it is I've bought?
Thanks!
Jon |
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CarbonR
Joined: 31 Dec 2008
Posts: 1969
Location: Clermont-Ferrand, France
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| Posted: Thu May 20, 2010 5:53 pm Post subject: |
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CarbonR wrote:
I would not say it is a medium format lens : the diameter is approximativement the same of the K mount. I'm sure it is not for the 6x7, my P67/PK adapter with outer bay mount is far bigger than yours 
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Information on Takumar lenses with samples :
Wide angle : Takumar 15/3.5 15mm, Takumar 17/4 17mm, Takumar 18/11 18mm, Takumar 20/4.5 20mm, Takumar 24/3.5 24mm, Takumar 28/3.5 V1 28mm, Takumar 28/3.5 V2 28mm, Takumar 35/2 V1 35mm, Takumar 35/2 V2 35mm, Takumar 35/2.3 35mm, Takumar 35/3.5 35mm, Takumar 35/4 35mm
Standard : Takumar 50/1.4 V1 50mm, Takumar 50/1.4 V2 50mm, Takumar 50/3.5 50mm, Takumar 50/4 50mm, Takumar 55/2 55/1.8 55mm, Takumar 55/2.2 V1 55mm, Takumar 55/2.2 V2 55mm, Takumar 58/2 58mm, Takumar 58/2.4 58mm
Short tele : Takumar 83/1.9 83mm, Takumar 85/1.8 85/1.9 85mm, Takumar 85/1.8 85mm, Takumar 100/2 100mm, Takumar 100/3.5 100mm, Takumar 100/4 100mm, Takumar 105/2.8 V1 105mm, Takumar 105/2.8 V2 105mm, Takumar 120/2.8 120mm
Telephoto : Takumar 135/2.5 V1 135mm, Takumar 135/2.5 V2 135mm, Takumar 135/3.5 V1 135mm, Takumar 135/3.5 V2 135mm, Takumar 150/4 V1 150mm, Takumar 150/4 V2 150mm
Long tele : Takumar 200/3.5 200mm, Takumar 200/4 200mm, Takumar 200/5.6 200mm, Takumar 300/4 V1 300mm, Takumar 300/4 V2 300mm, Takumar 300/4 V3 300mm, Takumar 300/6.3 300mm, Takumar 400/5.6 400mm, Takumar 500/4.5 500mm, Takumar 500/5 500mm, Takumar 1000/8 V1 1000mm, Takumar 1000/8 V2 1000mm
Zoom : Zoom-Takumar 45~125/4 , Zoom-Takumar 70~150/4.5 , Zoom-Takumar 85~210/4.5 , Zoom-Takumar 135~600/6.7
Achromatic : Ultra-Achromatic-Takumar 85/4.5 , Ultra-Achromatic-Takumar 300/5.6 300mm |
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peterqd
Joined: 28 Feb 2007
Posts: 7448
Location: near High Wycombe, UK
Expire: 2014-01-04
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| Posted: Thu May 20, 2010 6:00 pm Post subject: |
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peterqd wrote:
It looks like a Tamron adaptor with the green spot, but not Adaptall 1 or 2. Maybe the Adapt-a-matic or F system.
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indianadinos
Joined: 06 Jul 2008
Posts: 1310
Location: Toulouse, France
Expire: 2011-12-05
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| Posted: Thu May 20, 2010 6:56 pm Post subject: |
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indianadinos wrote:
Hi,
This seems to be an adapter for breech-lock lenses (such as the old Canon lenses with a silver ring), but i'm unable to identify the mount ...
Could this be a Miranda mount ?
| peterqd wrote: |
| Maybe the Adapt-a-matic or F system. |
Maybe F-system, i'm quite sure that Adapt-a-matic mounts just screw in (don't have my only Adapt-a-matic lens right here to check) ...
Cheers
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Please visit my blogs Shooting with a Pentax K10D / FF Visions
Takumar: 24/3.5, 28/3.5, 35/2, 35/3.5, 50/1.4, 55/1.8, 85/1.8, 105/2.8, 120/2.8, 135/3.5, 150/4, 200/4
Pentax-K: M28/2.8, K28/3.5, M50/1.4, A50/1.7, M50/4 Macro, K85/1.8, K105/2.8, K135/2.5, M200/4, M70-150/4
Zeiss: Flektogon 20/2.8, 20/4, 35/2.4, 35/2.8, Tessar 50/2.8, Pancolar 50/1.8, Biotar 58/2, Sonnar 135/3.5, Sonnar 180/2.8
Meyer: Primagon 35/4.5, Domiplan 50/2.8, Oreston 50/1.8, Primoplan 58/1.9, Trioplan 100/2.8, Orestor 100/2.8, Orestor 135/2.8
Schacht/Steinheil: Travenar 90/2.8, Travenon 135/4.5, Quinar 135/2.8, Quinar 135/3.5
Russian: MIR 37B, Industar 50/3.5, Helios 44M & 44M-2, Jupiter 37A
P6: Flektogon 50/4, Biometar 80/2.8, Orestor 300/4
Nikkor: Nikkor-O 35/2, Micro 55/3.5, Nikkor-S 50/1.4, Nikkor-Q 135/2.8
Fuji: EBC 28/3.5, EBC 55/3.5 Macro, EBC 135/2.5
Misc Lenses: Kiron 105/2.8 Macro, Tamron SP90/2.5
... and a few other Vivitar, Tamron, Sigma and Soligor lenses ...
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Univer
Joined: 30 Jun 2009
Posts: 282
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| Posted: Thu May 20, 2010 7:09 pm Post subject: |
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Univer wrote:
Interesting replies - thank you all!
@peterqd: I know this isn't an Adaptamatic mount; I've got a few lenses from that series (and I don't believe there was a K-mount adapter for that series in any case). I'm not really familiar with the F-system, I'm sorry to say.
@CarbonR: I thought "medium format" only because of the depth of the adapter. And in terms of diameter, it isn't very different from my P6 -> Pentax K tilt adapter.
@indianadinos: breech-lock makes sense to me too, but it isn't P6, for example. And I briefly thought about the old Canon breech-lock lenses as well (along with Praktina and Miranda), but I can't figure out why anyone would build such an adapter for those mounts. Come to think of it: isn't Miranda a four-tongue bayonet rather than three? I haven't handled a Miranda lens for a long time.
Cheers,
Jon |
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peterqd
Joined: 28 Feb 2007
Posts: 7448
Location: near High Wycombe, UK
Expire: 2014-01-04
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| Posted: Thu May 20, 2010 8:19 pm Post subject: |
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peterqd wrote:
Ah OK, I've never seen an Adapt-a-matic lens. Here's an F mount to Pentax ES (M42), is it similar?
http://www.buy.com/prod/tamron-mount-f-pentax-es/q/loc/111/203396439.html
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nemesis101
Joined: 25 Mar 2008
Posts: 2050
Location: Oregon USA
Expire: 2015-01-22
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| Posted: Thu May 20, 2010 9:47 pm Post subject: |
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nemesis101 wrote:
I reckon it's an adapter to fit lenses for the new medium format Pentax digital camera to a K mount bayonet that has somehow fallen through a worm-hole from the future to now, just to taunt and tease us...
Doug.
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Pros worry about money,
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Farside
Joined: 01 Sep 2007
Posts: 6557
Location: Ireland
Expire: 2013-12-27
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| Posted: Tue May 25, 2010 1:09 am Post subject: |
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Farside wrote:
If it wasn't for that shoulder on the lens end, I'd have suggested a Novoflex adapter.
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mo
Joined: 27 Aug 2009
Posts: 8979
Location: Australia
Expire: 2016-07-30
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| Posted: Tue May 25, 2010 1:22 am Post subject: |
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mo wrote:
Miranda I think has a notch in one of it's tongues.
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Fuji XE-1,Pentax K-01,Panasonic G1,Panasonic G5,Pentax MX
Ricoh Singlex TLS,KR-5,KR-5Super,XR-10
Lenses
Auto Rikenon's 55/1.4, 1.8, 2.8... 50/1.7 Takumar 2/58 Preset Takumar 2.8/105 Auto Takumar 2.2/55, 3.5/35 Super Takumar 1.8/55...Macro Takumar F4/50... CZJ Biotar ALU M42 2/58 CZJ Tessar ALU M42 2.8/50
CZJ DDR Flektogon Zebra M42 2.8/35 CZJ Pancolar M42 2/50 CZJ Pancolar Exakta 2/50
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Primoplan 1.9/58 Primagon 4.5/35 Telemegor 5.5/150 Angenieux 3.5/28 Angenieux 3,5/135 Y 2
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visualopsins
Joined: 05 Mar 2009
Posts: 11044
Location: California
Expire: 2025-04-11
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| Posted: Tue May 25, 2010 4:42 am Post subject: |
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visualopsins wrote:
Hey you know what? That might be the K adapter for Takumar 500mm or 1000mm. The set screw is for turning camera 90 degrees instead of the lens; are there 'stops' or indents at 90 degrees? I'll take a look at my 500mm in the morning...could also be K adapter for a telescope. |
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visualopsins
Joined: 05 Mar 2009
Posts: 11044
Location: California
Expire: 2025-04-11
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| Posted: Tue May 25, 2010 4:49 am Post subject: |
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visualopsins wrote:
| Farside wrote: |
| If it wasn't for that shoulder on the lens end, I'd have suggested a Novoflex adapter. |
Dave! Awesome to see you back!  |
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mo
Joined: 27 Aug 2009
Posts: 8979
Location: Australia
Expire: 2016-07-30
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| Posted: Tue May 25, 2010 5:02 am Post subject: |
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mo wrote:
| Quote: |
| Hey you know what? That might be the K adapter for Takumar 500mm or 1000mm. The set screw is for turning camera 90 degrees instead of the lens; are there 'stops' or indents at 90 degrees? I'll take a look at my 500mm in the morning...could also be K adapter for a telescope. |
You might be on to something just going by the screw on the side of the adapter it looks the same as what I have on my tripod collar...but that is pure guessing on my part  
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Fuji XE-1,Pentax K-01,Panasonic G1,Panasonic G5,Pentax MX
Ricoh Singlex TLS,KR-5,KR-5Super,XR-10
Lenses
Auto Rikenon's 55/1.4, 1.8, 2.8... 50/1.7 Takumar 2/58 Preset Takumar 2.8/105 Auto Takumar 2.2/55, 3.5/35 Super Takumar 1.8/55...Macro Takumar F4/50... CZJ Biotar ALU M42 2/58 CZJ Tessar ALU M42 2.8/50
CZJ DDR Flektogon Zebra M42 2.8/35 CZJ Pancolar M42 2/50 CZJ Pancolar Exakta 2/50
Auto Mamiya/Sekor 1.8/55 ...Auto Mamiya/Sekor 2/50 Auto Mamiya/Sekor 2.8/50 Auto Mamiya/Sekor 200/3.5 Tamron SP500/8 Tamron SP350/5.6 Tamron SP90/2.5
Primoplan 1.9/58 Primagon 4.5/35 Telemegor 5.5/150 Angenieux 3.5/28 Angenieux 3,5/135 Y 2
Canon FL 58/1.2,Canon FL85/1.8,Canon FL 100/3.5,Canon SSC 2.8/100 ,Konica AR 100/2.8, Nikkor P 105/2.5
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Univer
Joined: 30 Jun 2009
Posts: 282
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| Posted: Tue May 25, 2010 5:54 pm Post subject: |
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Univer wrote:
| siriusdogstar wrote: |
| Hey you know what? That might be the K adapter for Takumar 500mm or 1000mm. The set screw is for turning camera 90 degrees instead of the lens; are there 'stops' or indents at 90 degrees? I'll take a look at my 500mm in the morning...could also be K adapter for a telescope. |
So sorry - I lost track of this thread for a couple of days.
Yes, the detents are at 90 degree intervals. Which 500/1000 Takumars are you thinking of? I haven't used my S-M-C Tak 500/4.5 in quite a while, but I do recall that it has provision for adjusting the camera to the lens rather than the other way around (not that there's any other realistic option!).
Thanks!
Jon |
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Farside
Joined: 01 Sep 2007
Posts: 6557
Location: Ireland
Expire: 2013-12-27
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| Posted: Wed May 26, 2010 1:17 am Post subject: |
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Farside wrote:
| siriusdogstar wrote: |
| Farside wrote: |
| If it wasn't for that shoulder on the lens end, I'd have suggested a Novoflex adapter. |
Dave! Awesome to see you back! |
Thanks. My point was made and it's history now. Couldn't stay away from the damn place  and catching up, I see the changes made are probably for the better. The endless wrangling was getting to be a bit of a pisser and would probably have adversely affected numbers in the long run.
Now that there's a private forum for the more obnoxious deeply-held beliefs (which I had supposed to be the Café), I suppose it might all be sweetness and light and tea in the garden in the other areas. Like Hell, it will, but we can hope...
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Dave - Moderator
Camera Fiend and Biograph Operator
If I wanted soot and whitewash I'd be a chimney sweep and house painter.
The Lenses of Farside (click)
BUY FRESH FOMAPAN TO HELP KEEP THE FACTORY ALIVE ---
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visualopsins
Joined: 05 Mar 2009
Posts: 11044
Location: California
Expire: 2025-04-11
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| Posted: Wed May 26, 2010 10:39 pm Post subject: |
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visualopsins wrote:
| Univer wrote: |
| siriusdogstar wrote: |
| Hey you know what? That might be the K adapter for Takumar 500mm or 1000mm. The set screw is for turning camera 90 degrees instead of the lens; are there 'stops' or indents at 90 degrees? I'll take a look at my 500mm in the morning...could also be K adapter for a telescope. |
So sorry - I lost track of this thread for a couple of days.
Yes, the detents are at 90 degree intervals. Which 500/1000 Takumars are you thinking of? I haven't used my S-M-C Tak 500/4.5 in quite a while, but I do recall that it has provision for adjusting the camera to the lens rather than the other way around (not that there's any other realistic option!).
Thanks!
Jon |
I was thinking specifically of M42 S-M-C Takumar 4.5/500.
Today I found a photo in my downloads of a K-mount SMC Pentax 6.7/135-600mm showing the exact same adapter as in your photos, mounted on an ME Super. Too bad I can't show you because the auction ended too long ago and the photo isn't mine...  |
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Farside
Joined: 01 Sep 2007
Posts: 6557
Location: Ireland
Expire: 2013-12-27
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| Posted: Thu May 27, 2010 3:19 pm Post subject: |
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Farside wrote:
| siriusdogstar wrote: |
Today I found a photo in my downloads of a K-mount SMC Pentax 6.7/135-600mm showing the exact same adapter as in your photos, mounted on an ME Super. Too bad I can't show you because the auction ended too long ago and the photo isn't mine... |
Fair use applies.
_________________
Dave - Moderator
Camera Fiend and Biograph Operator
If I wanted soot and whitewash I'd be a chimney sweep and house painter.
The Lenses of Farside (click)
BUY FRESH FOMAPAN TO HELP KEEP THE FACTORY ALIVE ---
Foma Campaign topic -
http://forum.mflenses.com/foma-campaign-t55443.html
FOMAPAN on forum -
http://www.mflenses.com/fs.php?sw=Fomapan
Webshop Norway
http://www.fomafoto.com/
Webshop Czech
https://fomaobchod.cz/inshop/scripts/shop.aspx?action=DoChangeLanguage&LangID=4 |
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visualopsins
Joined: 05 Mar 2009
Posts: 11044
Location: California
Expire: 2025-04-11
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| Posted: Thu May 27, 2010 5:29 pm Post subject: |
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visualopsins wrote:
| Farside wrote: |
| siriusdogstar wrote: |
Today I found a photo in my downloads of a K-mount SMC Pentax 6.7/135-600mm showing the exact same adapter as in your photos, mounted on an ME Super. Too bad I can't show you because the auction ended too long ago and the photo isn't mine... |
Fair use applies. |
Thanks. I'm thinking about different interpretations in different places, but, what the hay, here goes...
Note: If these are your photos and you don't agree to 'fair use' please contact me.
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Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
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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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Univer
Joined: 30 Jun 2009
Posts: 282
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| Posted: Fri May 28, 2010 12:33 pm Post subject: |
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Univer wrote:
@siriusdogstar: Thank you so much for sharing those photos! That is certainly the adapter in question. Nice to know what it's for - although I think it's unlikely at best that I will ever have one of those behemoths to attach it to.
I wonder if it's a Pentax product? I'm not sure, given the lack of branding.
Oh, and I finally found the motivation to get out my S-M-C Tak 500/4.5 and check that bayonet fitting. I can definitely see why this adapter called it to mind, but it's a different configuration altogether.
Now to see if I can figure out a way to make this thing work for some other medium-format mount...
Thanks again!
Jon |
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