As usual, I hesitated before going, always afraid of not being able to control my urge to buy stuff that I don't need. Today I told myself, don't be impulsive, and it helped. I only spent $50 on lenses today, and got three lenses; one of them quite interesting, in fact. There were so many unique and desirable lenses to be had at today's show. Saw a Steinheil 100mm f2.8 macro, a beautiful beautiful lens, for a cool $800, but aperture not working. Also an Olympus 50mm f1.2 at a cool $700, and a rarer Konica 57mm f1.2 (it's gorgeous!). There is also this French Angenieux 50mm f1.5, in Exakta mount I believe, and the asking price was $9800. No, it's not a typo. The lens was in very rough shape too. You see, there were unique stuff to be had, but they were all selling at eBay prices (or more). In fact, when asked how much a lens was, some would check eBay on the spot, and then gave me an eBay price. If I wanted to pay this kind of price, I would buy from eBay, because there would be more choices and usually in better condition.
Still, it was worth going. I bought an Olympus Zuiko 50mm f1.8 lens, not in its usual OM bayonet mount, but in M42 mount. That's right, Olympus made a small number of M42 lenses, and this is one of them. I am sure the optic is nothing spectacular, and likely the same as the garden variety OM mount 50mm f1.8 that came with pretty much all OM SLRs at the time. One unique/proprietory feature of the lens is the locking pin, very similar to the Mamiya-Seikor screw mount lenses. It would not mount properly on most other cameras. This leads me to think they also made at least one M42 camera.
The second of the three lenses was the Schacht Travegar 100mm f3.3 lens in Exakta mount. Strikingly similar to the Isconar 100mm f4 that I also have, but the Schacht is larger. One interesting feature is that the lens can be unscrewed and be used as an enlarging or macro lens, a la Leitz 135mm f4.5. The Schacht 100mm f3.3 focuses much closer at 0.9m than the Isconar at 1.5m. I expect the two would be optically similar, which means nothing special, but I hope I am wrong and be surprised.
The last lens is the Soligor 105mm f2.8. I have a few variants of this focal length. Hansa, Hanimex, Spiratone, etc, all have something similar, or 105mm f2.5. Only reason I bought it, because it was only $10. The 105mm was a popular focal length and I am sure an easy lens to design and make. Without exception, these low cost lenses all have a T-Mount, and thus a pre-set aperture. It makes sense since these companies made lenses for various camera mounts, and a T-mount is ideal for this purpose. Just use a different mount for different cameras, like the Tamron Adaptall system, but without any sort of automation.
Olympus Zuiko 50mm f1.8 in M42 Mount. Note the red lettering on the name ring. OM mount lenses have white colors. Click for larger.
Like some Mamiya-Seiko lenses, this one has a locking pin too. It needs to be filed down in order to mount flat with the adapter. Click for larger.
Schacht Travegar 100mm f3.3 in EXA mount. Click for larger.
Soligor 105mm f2.8. This lens has an unsual 46mm filter size. Click for larger.
