Identity Crisis!!
Aug 24, 2022 08:00:20 #
BebuLamar wrote:
Enlarging lens has aperture ring. Enlarging lens doesn't have focusing ring. But in this case it seem that the lens does have focusing ring but no aperture ring.
That is correct. So far it’s definitely a freak.
Aug 24, 2022 08:05:30 #
skipwv
Loc: West Virginia
Since it’s third-party, perhaps the 5/8” thread is for a (missing) mount adaptor?
Aug 24, 2022 09:14:13 #
StanMac
Loc: Tennessee
Rongnongno wrote:
https://www.pentaxforums.com/userreviews/ricoh-rikenon-xr-35mm-f2-8.html
Not sure that one is the same lens as the OP’s example. It has a K-mount, not as res mount like the OP’s lens.
Stan
Aug 24, 2022 09:33:54 #
melismus
Loc: Chesapeake Bay Country
skipwv wrote:
Since it’s third-party, perhaps the 5/8” thread is for a (missing) mount adaptor?
It is not third-party. Rikenon is Ricoh's native lens.
Aug 24, 2022 10:29:19 #
fhayes wrote:
Hello folks!
Here is a lens that is in need of a body. We just don’t know which body. There are no other identification marks on this, the rear is maybe 5/8” and threaded on the outside.
Here is a lens that is in need of a body. We just don’t know which body. There are no other identification marks on this, the rear is maybe 5/8” and threaded on the outside.
Here are a couple clues - maybe. Plus --- see the link supplied by Rongnongno.
Loren - in Beautiful Baguio City
Aug 24, 2022 10:34:03 #
rlv567 wrote:
Here are a couple clues.
Loren - in Beautiful Baguio City
Loren - in Beautiful Baguio City
Isn't a PK mount (second) bayonet?
Aug 24, 2022 11:51:01 #
fhayes wrote:
I hadn’t thought of that ! It very well could be!! THANKS
Enlarger lenses require an aperture and an aperture control ring.
Aug 24, 2022 12:24:22 #
fhayes wrote:
Hello folks!
Here is a lens that is in need of a body. We just don’t know which body. There are no other identification marks on this, the rear is maybe 5/8” and threaded on the outside.
Here is a lens that is in need of a body. We just don’t know which body. There are no other identification marks on this, the rear is maybe 5/8” and threaded on the outside.
I finally found your lens!!! - just some 3,000 later, by the serial number, but otherwise, yours! It took determining some equivalencies, and being certain the lens mount was M42, not T mount - then it was pretty straightforward. Later versions were automatic, and this lens was marketed under several names. (Please forget the earlier conclusion jumps!!!)
You can see it at:
https://www.ebay.ph/itm/144618919826?hash=item21abf59792:g:3gAAAOSwQz9itjJ0&amdata=enc%3AAQAHAAAAsLgHVWtyU49hCQ%2FOU499I1AmYF6kmTXAB9sJYzId7qkVozl7MpfmMUL9ffKNNR4Syh843yqa48BsTW%2FaoRT7ARfvHmAmg7OpGJD%2F7RVmHnYtXXy9gp0fNg%2B5DHjyot5qk5AuS2DyOOqnX1hq6tHEjn4cIPqJSG9Jzp2riYmnQHRgns4dLGxfkXDfrO7b55vf5art7JQw4SxN4YnpTDWjoE9oSTXchwOHBIrr40S0YXV5%7Ctkp%3ABk9SR9zd3onaYA
And here are a couple of pictures:
Loren - in Beautiful Baguio City
Aug 24, 2022 12:28:49 #
rlv567 wrote:
I finally found your lens!!! - just some 3,000 lat... (show quote)
that's not it. The OP lens has much smaller screw thread.
Aug 24, 2022 12:50:36 #
BebuLamar wrote:
that's not it. The OP lens has much smaller screw thread.
Hard to tell, just from the pictures; have to measure the diameter and thread pitch - to be certain it's the T mount. If it is, there are lots of cameras with which it could be used - with an adapter. The lens markings are the same except that the later one is automatic, though, and not that far apart in serial number.
Loren - in Beautiful Baguio City
Aug 24, 2022 13:03:44 #
Aug 24, 2022 13:04:25 #
delder
Loc: Maryland
My first guess would be a "C" mount CCTV lens.
OD on C mount is 1".
I HAVE seen some smaller 2/3" Vidicon cameras using a smaller non-standard lens mount but these were not widely used.
OD on C mount is 1".
I HAVE seen some smaller 2/3" Vidicon cameras using a smaller non-standard lens mount but these were not widely used.
Aug 24, 2022 13:06:32 #
delder wrote:
My first guess would be a "C" mount CCTV lens.
OD on C mount is 1".
I HAVE seen some smaller 2/3" Vidicon cameras using a smaller non-standard lens mount but these were not widely used.
OD on C mount is 1".
I HAVE seen some smaller 2/3" Vidicon cameras using a smaller non-standard lens mount but these were not widely used.
Yes but the OP said he measured it only 5/8"
Aug 24, 2022 13:08:26 #
StanMac
Loc: Tennessee
That rear part that extends well beyond the threaded part of the mount is problematic for use on an SLR. Makes me think it is for use on a video/film camera.
Stan
Stan
Aug 24, 2022 14:16:12 #
amfoto1
Loc: San Jose, Calif. USA
Initially I suspected something had been removed from the rear of the OP's lens.... a mount and/or aperture control mechanism.
However, reviewing the link below I see "D-mount" used with 8mm cinema cameras, which appears to exactly match the OP's measurement... 0.625 inch (15.88 mm). So that's another possibility.
https://en.wikipedia.org/wiki/Lens_mount
The confounding part is "Wide Rikenon" written on the front of a 35mm f/2.8 lens.... 35mm is telephoto on an 8mm cine camera. In fact, something around 13mm is "standard" on 8mm cameras (like 50mm is on full frame). So a 35mm focal length D-mount lens certainly wouldn't be "wide"... it would be roughly equivalent to 135mm on full frame or 85mm on APS-C.
Some good news may be that there are some adapters to allow old D-mount lenses to be used on certain modern mirrorless digital cameras. However, the D-mount has a very short flange-to-film/sensor distance... only 12.29mm. The adapters must use some optics because all mirrorless I'm aware of have considerably longer flange-to-film/sensor distance.
However, reviewing the link below I see "D-mount" used with 8mm cinema cameras, which appears to exactly match the OP's measurement... 0.625 inch (15.88 mm). So that's another possibility.
https://en.wikipedia.org/wiki/Lens_mount
The confounding part is "Wide Rikenon" written on the front of a 35mm f/2.8 lens.... 35mm is telephoto on an 8mm cine camera. In fact, something around 13mm is "standard" on 8mm cameras (like 50mm is on full frame). So a 35mm focal length D-mount lens certainly wouldn't be "wide"... it would be roughly equivalent to 135mm on full frame or 85mm on APS-C.
Some good news may be that there are some adapters to allow old D-mount lenses to be used on certain modern mirrorless digital cameras. However, the D-mount has a very short flange-to-film/sensor distance... only 12.29mm. The adapters must use some optics because all mirrorless I'm aware of have considerably longer flange-to-film/sensor distance.
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