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jamaeolus
Joined: 19 Mar 2014
Posts: 2964
Location: Eugene
Expire: 2015-08-20
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 Posted: Sat Dec 23, 2023 9:52 pm Post subject: My oldest lens adapted to A7RIV. Poco Sym |
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jamaeolus wrote:
This lens came to me in a fully functional brass shutter...OK mostly functional. The T setting doesn't work properly. It says Poco R C Co. Sym 5x7 on one mounted chrome plate. Another says Pat. May 22 -94. It is missing one of the brass machine screws that holds the 2 halves of the case together. I removed the remaining to try and obtain a replacement. It appears to be a 1/2 inch #3 with countersunk slotted head and 56 thread pitch. Then, since it was open, I cleaned the inside with alcohol after making sure the aperture blades were metal and blasted it dry with a hair dryer on low. I checked to see if by chance I had a jam nut that would fit...no luck. Looking through my junk drawers I came across an EF body cap with a hole just a smidgen too tight. A bit of scraping and I was able to crea5 threads in the plastic using repeate on ...back and forth, back and forth, repeat, scrape on...back and forth etc until it was snug against the shoulder. Then onto EF extension tubes and bellows. Finding infinity I measured. Ostensible FL seems 7 and a half inches. The diaphragm is marked 8 to 32, which is undoubtedly old US aperture scale.
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BrianSVP
Joined: 09 Jun 2023
Posts: 335
Location: Philadelphia
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| Posted: Sat Dec 23, 2023 10:18 pm Post subject: |
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BrianSVP wrote:
The Pocos were folders and view cameras made by Rochester Camera Company around the turn of the 20th century. AFAIK, they all used Baush and Lomb lenses, Achros or Rapid Rectilinears. The RR is a symmetrical design, which might be the source of the "sym" on the nameplate.
Based on the patent date, it appears to be a Turner shutter.
Here's a link to the patent:
https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/0520198
Some info about Rochester Camera Co:
http://camera-wiki.org/wiki/Rochester_Camera_and_Supply_Co.
EDIT:
A little poking around indicates some of the larger Pocos used Gundlachs as well, so also possibly one of those. The Turner patent is assigned to the Gundlach company, so it would make sense... |
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kiddo
Joined: 29 Jun 2018
Posts: 1221
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| Posted: Sat Dec 23, 2023 10:45 pm Post subject: |
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kiddo wrote:
honestly, i think the lens is just beautiful, no matter the pic that would take |
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visualopsins
Joined: 05 Mar 2009
Posts: 10957
Location: California
Expire: 2025-04-11
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| Posted: Sun Dec 24, 2023 12:30 am Post subject: |
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visualopsins wrote:
 Wow that is just an awesome-looking rig you've got there jamaeolus!
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
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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calvin83
Joined: 12 Apr 2009
Posts: 7555
Location: Hong Kong
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| Posted: Sun Dec 24, 2023 1:43 am Post subject: |
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calvin83 wrote:
Nice steampunk style lens and great setup 
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Baekmann
Joined: 28 Feb 2021
Posts: 72
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| Posted: Sat Dec 30, 2023 12:51 am Post subject: |
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Baekmann wrote:
That looks so cool, I would love to see some pictures taken with this setup
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jamaeolus
Joined: 19 Mar 2014
Posts: 2964
Location: Eugene
Expire: 2015-08-20
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| Posted: Sat Dec 30, 2023 3:55 pm Post subject: |
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jamaeolus wrote:
I will make it happen today. I did manage to find a brass machine bolt that was 5/8s long #3 with the 56 pitch and countesunk head. I managed to cut it back the 1/8" (otherwise would have stuck out the back of the case). The glass is very clear in the center but the objective has a ring, maybe a sixteenth inch wide on the outside edge, of balsam crazing. It won't effect my images as I am only using a tiny tiny portion of the 5x7 inch image circle.
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jamaeolus
Joined: 19 Mar 2014
Posts: 2964
Location: Eugene
Expire: 2015-08-20
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| Posted: Sat Dec 30, 2023 9:06 pm Post subject: |
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jamaeolus wrote:
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jamaeolus
Joined: 19 Mar 2014
Posts: 2964
Location: Eugene
Expire: 2015-08-20
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| Posted: Sat Dec 30, 2023 9:19 pm Post subject: |
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jamaeolus wrote:
Note these are not my usual straight from the camera with contrast boost. These have been tweaked on several parameters. First 2 files worked fine after scaling down. After that again with the 410 error. Frustrating. I am quite surprised how good the color rendition is since this lens predates any color film by a couple decades.
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visualopsins
Joined: 05 Mar 2009
Posts: 10957
Location: California
Expire: 2025-04-11
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| Posted: Sat Dec 30, 2023 10:15 pm Post subject: |
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visualopsins wrote:
| jamaeolus wrote: |
| Note these are not my usual straight from the camera with contrast boost. These have been tweaked on several parameters. First 2 files worked fine after scaling down. After that again with the 410 error. Frustrating. I am quite surprised how good the color rendition is since this lens predates any color film by a couple decades. |
410 errors using "Upload Picture" or "Drag and Drop upload"? The other way may work better. 
Any tweaking to White Balance? Like the reds & greens. Someone will know the lens formula by that split-image bokeh characteristic.
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
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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jamaeolus
Joined: 19 Mar 2014
Posts: 2964
Location: Eugene
Expire: 2015-08-20
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| Posted: Sat Dec 30, 2023 10:50 pm Post subject: |
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jamaeolus wrote:
I used the find file function via upload picture. The color profiles are only very slightly tweaked. The outside photos were taken on a very gray dim day which aggravates the tendency of uncoated lenses to have washed out appearance. I was trying to match the look I saw with my eyes.
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visualopsins
Joined: 05 Mar 2009
Posts: 10957
Location: California
Expire: 2025-04-11
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| Posted: Sun Dec 31, 2023 12:01 am Post subject: |
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visualopsins wrote:
| jamaeolus wrote: |
| I used the find file function via upload picture. The color profiles are only very slightly tweaked. The outside photos were taken on a very gray dim day which aggravates the tendency of uncoated lenses to have washed out appearance. I was trying to match the look I saw with my eyes. |
410 after clicking the Browse button to find the file, or after selecting the file, or after clicking the Send button?
Been grey & windy & very rainy here past few days too. The colors look real to me!
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
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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calvin83
Joined: 12 Apr 2009
Posts: 7555
Location: Hong Kong
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| Posted: Sun Dec 31, 2023 12:30 am Post subject: |
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calvin83 wrote:
| visualopsins wrote: |
| jamaeolus wrote: |
| I used the find file function via upload picture. The color profiles are only very slightly tweaked. The outside photos were taken on a very gray dim day which aggravates the tendency of uncoated lenses to have washed out appearance. I was trying to match the look I saw with my eyes. |
410 after clicking the Browse button to find the file, or after selecting the file, or after clicking the Send button?
Been grey & windy & very rainy here past few days too. The colors look real to me! |
The upload function is not very stable these days. I got 410 error randomly. Sometime a file failed to upload but the other files are fine.
The two samples looks not bad even it is tweaked.
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https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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visualopsins
Joined: 05 Mar 2009
Posts: 10957
Location: California
Expire: 2025-04-11
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| Posted: Sun Dec 31, 2023 3:27 am Post subject: |
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visualopsins wrote:
I got a 410 just now trying to upload 7968 × 5320 9MB jpg...the upload window "connection" to the browser window that spawned it is closing probably due to a too-short timeout, Without the connection the download window cannot cannot write the url to the uploaded image into the message -- to the upload window it appears the message window has disappeared, thus 410 error.
If an image upload takes too long to upload due to slow/faulty internet connection giving a 410 error, try again. I recommend using the Drag and Drop upload because of the progress bar. Uploading multiple images is easy drag & drop of files rather than Browsing Selecting waiting each file.
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
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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