I have one of these. What's it worth to you?
https://www.ebay.com/itm/Komura-f-Bronica-C-S2-EC-Telemore-95-12573-72/282461713296
Why, yes... yes I am. I asked what they look like so I could identify one. I was given a link that showed one with a long shank that was labeled "Telemore 66 For Bronica S2 C2". Then I saw your link to one that looks a whole lot different. It is labeled "Telemore 95 K M C." Unconfuse me, please. I've seen the one you have before and wondered what K M C means. I could not identify it as fitting Bronica S2. And then there is 7 K M C? At $180+ US I am not interested, but would still like to know if there is a way to identify those made for Bronica other than looking at the mount end (which is not always shown). The most expensive Komura Telemore 2x in the long list of those available on eBay is $39 US. I don't need one if I can't find one for something around that price."I am looking to acquire a Komura Telemore 95 II 2x converter to attach to a Bronica S2"
That is exactly what what I offered you. Confused....
When I acquired my used Pentax 67 system of body and lenses about 35 years ago, A Komura Telemore 2x converter was included. Perhaps I had a particularly bad example, but mine was a singularly bad optical pile of crap. (And I was trying it on telephoto lenses, not wide angles.) When I next sold stuff at a swap meet, I put it out with a "make offer" tag on it. Some poor bastard offered me $75 and I took it. I'm sure each of us thought he was robbing the other. At least I felt a liittle bad over it. My Point: Don't waste you money on a Telemore converter, I or II, single or mutli-coated. It's sucker bait.
Lenses do not scale well, because glass is not often available with scaled refeactive indexes and dispersion properties. When you scale a lens design, you have to recalculate and optimize the design with the available glass.Why wouldn't they scale it up for medium format?
How hard could that be for world-class Japanese opticians?
The typical prescription is scaled for 100 mm. Other focal lengths are obtained by scaling all dimensions -- surfaces' radii, elements' diamteters, elements' thicknesses, inter-element spacing -- proportionally. The glasses used don't change.Lenses do not scale well, because glass is not often available with scaled refeactive indexes and dispersion properties. When you scale a lens design, you have to recalculate and optimize the design with the available glass.
Many of the better medium format 2x extenders were 6-element.
Still I'm curious about medium format 2x teleconverters , do any have a 7 element design (examples please) . Peter
Were any of these made to fit the Bronica S2/S2A mount?
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