FordTran
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seeking some guidance on this. I dumped all my mirrored professional gear (nikon and canon ff) in favor of mirrorless sony cameras. Particularly the a6500 since it was smaller than the a7r2. The smaller form factor gave me more inspiration to take it out an actually enjoy photography, the 6500 is also a formidable photo and video tool. Anyway, this is backwards thinking, but I really liked adapting old lenses and my favorite lens out of 10 has been the rokkor 58mm 1.2. All of a sudden, i'm back to big and heavy. But I digress. I use the vintage lenses with the focal reducer from Mitakon (Lens Turbo II) which as been nothing but excellent. Great image quality and you retain a stop of light and (almost) the full frame image. This way, you can achieve some of the quirkiness of swirly bokeh (helios/biotar), or deep vignetting on an apsc sensor. I bought 2 of the LT2, a canon EF to sony E to use for most of the vintage lenses and a rokkor SR to sony E. I didn't want to adapt the rokkor to the EF to sony since that requires another mirror (difference in image plane distance) which will further degrade image quality and since the rokkor was my most expensive lens at 350, i figure it should get it's own focal reducer. I began some research and saw that you can buy 3d printed mounts so that the rokkor can fit onto the EF body without using a mirror for a different rokkor lens (50mm 1.4) which is more cheaply built and easier to take apart. I figure lets give it a shot so i can reduce my bag weight by not having to take 2 focal reducer everywhere. I've served many vintage lenses and they seem to be pretty straight forward but the 58mm 1.2 is a very well-manufactured lens. Long story slightly shorter, I took the lens apart very meticulously, only to find out the 3d printed part was off spec and wouldn't fit. After I precisely put all the tiny parts back together, the lens seem to be operating WITHOUT CLICKS in the aperture ring! I have no idea what happened. It was a lucky little surprise because the rokkor does not have a 1.4 or 1.8 stop. You go straight from 1.2 (soft image with mushy melted bokeh) straight to f2 which is a little sharper but better bokeh. Now that it's clickless, I can go to stops inbetween and the lens is also a better cinematography lens. But if anyone has taken a 58/1.2 rokkor lens apart can let me know what happened, i'd appreciate it. The five images below are from f1.2, somewhere between f1.2 and 2, then f2, then somewhere between 2 and 2.8, then 2.8. You can see the light on the oven (top right of the lacroix box), going from big round, to a little less, to that octagonal bokeh ball by f2-2.8. Maybe this can be a public service announcement: dont take your rokkor 1.2 lens apart if you dont want to mess it up. lol
f1.2
between 1.2-2
f2
between 2 and 2.8
f2.8
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