Well, my lab botched the test slides comparing a radioactive vs.
non-radioactive 50mm f/1.4 SC, but I could make out a very significant
increase in resolution wide open in the earlier, radioactive lens. The
later, non-radioactive was mushy, like I'd expect from a D grade. The
corners seems the same wide open: not very good.
Not much info, but stay tuned.
Gary Reese
Las Vegas, NV
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