On Fri, 25 Jul 2003, Jeff Keller wrote:
> You don't need to be "concerned" about the radioactive 50/1.4 .
> They seem to be rarer than M lenses. I've been half heartedly
> looking for one for about six months and have seen several M
> lenses and cameras but not a single 50/1.4 with SN below
> 15x,xxx let alone below 13x,xxx or 12x,xxx where there is more
> certainty that it is a BAD lens. Even the 55/1.2 s that I've seen
> have high enough SN that their radioactivity is doubtful. 8^(
All M-SYSTEM 50/1.4's (and 1.2's) will have a radioactive element and
will show yellowing. I also have a very early 50/1.4 (118xxx) and it
also has a yellowing radioactive element. The 50/1.4 M-SYSTEM/OM-SYSTEM
conversion took place somewhere around the 115xxx range so if you really
want a radioactive 50/1.4 it would probably be easier to find an M-SYSTEM
version of the lens than an OM-SYSTEM one.
-mark
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