nathaniel_pearson Posted January 30, 2005 Share Posted January 30, 2005 My recent Mamiya 80mm tlr lens was a bit scratched up (both viewing and taking front elements) and flare-prone. Tinkering around, I realized that the 80 uses a standard Copal 0 shutter. 'Hmm,' I thought, 'I've got a bunch of 90mm/3.5 Koni/Rapid Omega Hexanon/Omegon elements sitting around from a bulk lot I bought long ago. What if?...' A bit of hacking later, I've now got a hybrid 'Koni-Omiya' 90/3.1 or thereabouts. Strangely, the viewing lens was toughest, as I had to seriously file down the metal rim of a front Koni front element in order to squeeze it into the small mount allotted for it. But it worked fine. Mounting the taking lens required removing a couple plastic cover pieces from the standard Mamiya shutter, but I was able to effectively replace them with a rim/hood using cobbled spare parts from other junk. Some examples of shots from the new Frankenlens ('Frankenon'?) are attached. I'm trying to optimize the shim depth for bokeh, and may still have some adjustment to do. Please note that the vertical fog strips along the sides of the shots is a camera (lightleak) issue not specific to this lens or shutter. Enjoy. Link to comment Share on other sites More sharing options...
siu_fai_au1 Posted January 31, 2005 Share Posted January 31, 2005 I would love to see how that looks. Where are the pictures? Link to comment Share on other sites More sharing options...
nathaniel_pearson Posted January 31, 2005 Author Share Posted January 31, 2005 I didn't see an upload option -- is there one on this forum, or must I make a link to a separate storage site? Link to comment Share on other sites More sharing options...
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