On 12/3/2011 4:20 PM, Bulent Celasun wrote:
The only thing I can see repeatably (!) is the difference in rendering
of colors; my radioactive Takumar shows everything a bit yellowish.
IIRC, yellowing with age is a known issue with some radioactive Takumar
lenses and an be reversed through exposure to UV light (even direct
sunlight.) I have a dim recollection of someone on this list describing
how he fixed up on of his old lenses with UV light exposure.
Never thought about this but I wonder if any of the old 6x7 Takumar
lenses were subject to this. I don't know if they incorporated the
radioactive elements or not...
Mark C.
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