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on Jan 30, 2022 14:35:51 GMT
Posted: Jan 30, 2022 14:35:51 GMT
It's OK with me. Tomioka's NON-Yashica lenses don't get much "Press". The good side of that coin is it keeps the prices down!
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on Mar 6, 2022 18:56:39 GMT
Posted: Mar 6, 2022 18:56:39 GMT
Hi, Great images - thanks for sharing your impressions. Also quite impressive that you were able to use it handheld! I have tried to adapt one of these as well recently on full frame, however so far I've only taken a couple of shots. I find it very interesting that you used the condenser lens in your setup. Because of the fact that the one I bought seemed quite hazy I removed the lens from it and mounted it reversed in front of a tube lens (I usually use a Schneider Componon-S 180 mm). Of course that's only useful for high-magnification shot, but it seems to work okay so far. I'll certainly try to get it onto a lens with shorter focal length to see where the image circle gets too small for FF. Here are the first couple of shots I made with it: simple.joy flickr - E-Yashinon-DX 21 mmLike I mentioned, the setup is probably far from perfect, but I think I'll continue experimenting with it, because it seems like a lens with great potential.
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Status: Long, long time Contax and Yashica user; glad to be here and hope to contribute.
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on Mar 6, 2022 19:06:02 GMT
Posted: Mar 6, 2022 19:06:02 GMT
Hi, Great images - thanks for sharing your impressions. Also quite impressive that you were able to use it handheld! I have tried to adapt one of these as well recently on full frame, however so far I've only taken a couple of shots. I find it very interesting that you used the condenser lens in your setup. Because of the fact that the one I bought seemed quite hazy I removed the lens from it and mounted it reversed in front of a tube lens (I usually use a Schneider Componon-S 180 mm). Of course that's only useful for high-magnification shot, but it seems to work okay so far. I'll certainly try to get it onto a lens with shorter focal length to see where the image circle gets too small for FF. Here are the first couple of shots I made with it: simple.joy flickr - E-Yashinon-DX 21 mmLike I mentioned, the setup is probably far from perfect, but I think I'll continue experimenting with it, because it seems like a lens with great potential. Some very promising images there! Keep up the excellent work...
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on Mar 7, 2022 10:14:17 GMT
Posted: Mar 7, 2022 10:14:17 GMT
Thank you very much - I'm glad you think so!
Does anyone know any details on the construction of the E-Yashinon 21 mm f/3.5? From a quick reflection count I would say that it has a 5/3 (Heliar) design but I'm never totally sure with these things...
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on Mar 7, 2022 16:08:19 GMT
Posted: Mar 7, 2022 16:08:19 GMT
I have the Yashica instruction sheet and while it does not have a diagram of the optical design, it states it is a 5/3 design with an angle of view of 34 degrees -- and an optimal magnification of 15X in a 5X-33X range. Apertures from f3.5 - 16.
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on Mar 7, 2022 22:23:50 GMT
Last Edit: Mar 7, 2022 22:26:08 GMT by simplejoy
I have the Yashica instruction sheet and while it does not have a diagram of the optical design, it states it is a 5/3 design with an angle of view of 34 degrees -- and an optimal magnification of 15X in a 5X-33X range. Apertures from f3.5 - 16. Thank you very much! That's good to know. It's really interesing how many different macro/enlarging lenses and designs with shorter focal lengths Tomioka created... Osawa Tominon EL 40 mm f/3.5 (6/4) Copal E18C 40 mm f/4 (6/4) Copal E18C 35 mm f/4 (6/4) Tominon (Polaroid MP4) 35 mm f/4.5 (4/3 reverse Tessar) E-Yashinon-DX 21 mm f/3.5 (5/3) Tominon 26.9 mm f/4.5 (4/4 from my count, but that's just speculation) Tominon (Polaroid MP4) 17 mm f/4 (6/4) It really looks like they didn't just recycle the same design or approach over and over again, but came up with quite a few (good to very good) solutions.
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on Mar 7, 2022 23:52:57 GMT
Last Edit: Mar 7, 2022 23:54:21 GMT by xkaes
I think that Tominon EL 40mm also showed up under the HOYA label -- FYI: photocornucopia.com/1061.htmlIt has several other TOMINON EL lenses -- under OSAWA which marketed them (sorta like BELL & HOWELL, VIVITAR, SOLIGOR, AIC, etc.)
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Status: Failed treatment for L.B.A. and G.A.S,
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on Mar 8, 2022 7:11:02 GMT
Last Edit: Mar 8, 2022 7:13:02 GMT by lumiworx
Hi, Great images - thanks for sharing your impressions. Also quite impressive that you were able to use it handheld! I have tried to adapt one of these as well recently on full frame, however so far I've only taken a couple of shots. I find it very interesting that you used the condenser lens in your setup. Because of the fact that the one I bought seemed quite hazy I removed the lens from it and mounted it reversed in front of a tube lens (I usually use a Schneider Componon-S 180 mm). Of course that's only useful for high-magnification shot, but it seems to work okay so far. I'll certainly try to get it onto a lens with shorter focal length to see where the image circle gets too small for FF. Here are the first couple of shots I made with it: simple.joy flickr - E-Yashinon-DX 21 mmLike I mentioned, the setup is probably far from perfect, but I think I'll continue experimenting with it, because it seems like a lens with great potential. The quick and dirty test shots of the dime were done with a higher ISO at 3200 to get the shutter speed up for handholding at 1/125 ( EXIF details shown on the gallery page), but I still braced against the tabletop to keep the shake to a minimum. Pixel peeping would prove to show some slightly mushy details, so although these shots were acceptable for testing purposes, they were far from normal or ideal for me. I prefer to use a tripod for most everything I do - even when it might not be a necessity. I was pretty surprised about the condenser lens too, and looking back on it, I couldn't guarantee that it hadn't been reversed prior to getting into my hands. Since it hasn't been used for its intended purpose by me, I have no idea if it was, or is now, in its proper position. Now that I have a second lens that has the carrier included - and as far as I know, hasn't been touched till now - I might pull them both out for a comparison. The simple fact that it works as a taking lens with the condenser intact is beyond astounding to me. I also haven't tried to stack or reverse lenses for any type of extra magnification, and in this particular test case, having adapted it for use with an APS-C sensor means I got an added 50% increase. Without hesitation I can say there's no way to get a proper image circle on full frame with a DX 21mm with standard adaptation with an L39 adapter. Adding any number of macro tubes won't do anything to help either. It won't vignette on APS-C or M4/3 or smaller, but I think any attempts to go to a larger frame size might be futile. The optics just weren't designed to offer much more than what was needed to produce Atoron film prints, and there's no filter threads to use for a reversal setup either.
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on Mar 8, 2022 13:05:22 GMT
Posted: Mar 8, 2022 13:05:22 GMT
I think that Tominon EL 40mm also showed up under the HOYA label -- FYI: photocornucopia.com/1061.htmlIt has several other TOMINON EL lenses -- under OSAWA which marketed them (sorta like BELL & HOWELL, VIVITAR, SOLIGOR, AIC, etc.) Thanks - yes indeed, as you stated there are even more... at least a Bogen WA, the Yashica Lens and a DO Industries version for the 40 mm one. As mentioned before, because I'm helping Mark ( 169) a little bit in creating the most comprehensive list of adaptable alt-lenses (DELTA) so far, I've looked into many of them that appeared under different labels and it's quite surprising how numerous they are, particularly among the whole enlarging lens section. But I guess I don't need to tell you that, seeing how widespread it is among the <38 mm lenses you covered on your site!
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on Mar 8, 2022 21:14:46 GMT
Last Edit: Mar 8, 2022 21:15:42 GMT by simplejoy
The quick and dirty test shots of the dime were done with a higher ISO at 3200 to get the shutter speed up for handholding at 1/125 ( EXIF details shown on the gallery page), but I still braced against the tabletop to keep the shake to a minimum. Pixel peeping would prove to show some slightly mushy details, so although these shots were acceptable for testing purposes, they were far from normal or ideal for me. I prefer to use a tripod for most everything I do - even when it might not be a necessity. I was pretty surprised about the condenser lens too, and looking back on it, I couldn't guarantee that it hadn't been reversed prior to getting into my hands. Since it hasn't been used for its intended purpose by me, I have no idea if it was, or is now, in its proper position. Now that I have a second lens that has the carrier included - and as far as I know, hasn't been touched till now - I might pull them both out for a comparison. The simple fact that it works as a taking lens with the condenser intact is beyond astounding to me. I also haven't tried to stack or reverse lenses for any type of extra magnification, and in this particular test case, having adapted it for use with an APS-C sensor means I got an added 50% increase. Without hesitation I can say there's no way to get a proper image circle on full frame with a DX 21mm with standard adaptation with an L39 adapter. Adding any number of macro tubes won't do anything to help either. It won't vignette on APS-C or M4/3 or smaller, but I think any attempts to go to a larger frame size might be futile. The optics just weren't designed to offer much more than what was needed to produce Atoron film prints, and there's no filter threads to use for a reversal setup either. That sounds like quite a challenge. I also prefer using a tripod for most of my shots, at least when I'm shooting indoors. I'm not really familiar with the finer details of the device but if I understand it correctly the whole Atoron unit is designed to work like a single enlarging lens on a regular enlarger. If that's the case I think it shouldn't be too surprising that it just works like a regular enlarging lens when shooting as well. My first instinct was to use it with the condensor, but the haze was preventing that, so I tried it without. It's possible to reverse the lens, even though it has no filter thread: because it's so tiny you can just unscrew the little handles and put it inside a M42 helicoid/bellows - however you probably need a 29x1 mm to M42 step ring, or some clamp adapter. Thanks a lot for the information on the image circle constraints - I'm sure you're right! It's not a lens made for full frame, at least if you're not using it for really high magnification. I made a shot showing the maximum distance where it still (somewhat) covers the full frame sensor, even though the vignetting is already quite pronounced:  All stalk and no cider by simple.joy, auf Flickr
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