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By Aussie Ash · Posted
The 0.71 speedbooster to Mamiya 645 is around Aus $700 so not on the XMas list.I am quite happy with my present rig -
By Aussie Ash · Posted
sorry about the confusion the adaptor and cross section with dimensions posted on Thursday is for a camera with a PL mount and the adaptor will therefore take the older standard lenses.Adapting the other way is more difficult -
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By eatstoomuchjam · Posted
Speed boosting a 45mm f/2.8 lens onto a smaller sensor with a 0.71x converter gives you a 32mm f/2 lens. That's it. If you like the character of the medium format lens, that's great and it's a worthwhile endeavor. But aside from the character unique to that model of lens, it won't look appreciably different from a 32mm f/2 lens that was made to cover the format you're adapting to. That said, I've been thinking about building graflok DOF adapters that I could stick on some of my medium and large format cameras - not because there is an intrinsic medium or large format look, but because I have some really interesting older lenses and when I adapt them to smaller formats, I'm just using the pretty good/well-corrected centers of the image circle and not the cool outer edges where things get interesting/cool/weird. I think a medium format one might be my next project after I finish the M mount for the UC12K (which is looking like it will be tomorrow sometime?). I have a kind of beat up, but otherwise unmarked 6x9cm ground glass handy. It'll at least be good enough for a proof of concept. Most of my 4x5 stuff has either a fresnel (visible lines!) or grids on the GG, but I also have at least one spare 4x5 GG lying around that I could use for a proof of concept. Oh, and now that I think of it, I have an old Seroco 4x5 which has clean GG and I think it's from the 1920's or so - maybe I have a project for tomorrow while I wait for another iteration of my UC12K mount to finish printing (now that I'm near the end and printing the entire part, the prints are taking about 3 1/2 hours each). -
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