Sonnar Brian
Established
I had a Jupiter-9 in LTM that was calibrated for the Leica RF. The focus scale did not quite go to infinity, but it physically stopped where my Canon 7 RF indicated "infinity" should be. It was accurate at minimum focus at F2. The optics were GREAT but the focus helical had a rough spot that set it apart from Contax and Nikkor lenses. It was the "black Export" version. Anyone using Russian lenses should check the close-up wide-open and infinity focus before taking any significant shots with the lenses.
I use my Jupiter-8m and Helios-103 on my Contax IIIa and Nikon S2. I changed the flange-to-film distance using shims on the S2 to work (better) with the Contax lenses.
I had a Jupiter-9 in chrome for the Contax Mount cameras. The helical was so sloppy that it moved back-and-forth more than 0.5mm at a fixed distance.
I use my Jupiter-8m and Helios-103 on my Contax IIIa and Nikon S2. I changed the flange-to-film distance using shims on the S2 to work (better) with the Contax lenses.
I had a Jupiter-9 in chrome for the Contax Mount cameras. The helical was so sloppy that it moved back-and-forth more than 0.5mm at a fixed distance.
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