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Tamron SP 90mm f2.5 - 52B
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PostPosted: Thu Feb 09, 2023 3:30 pm    Post subject: Tamron SP 90mm f2.5 - 52B Reply with quote

Hi
Today I bought a Tamron SP 90mm f2.5 and a Canon AV-1 c/w Canon FD 50mm f1.8 for the price of two pints of Guinness and a packet of nuts!
All in lovely condition but the Tamron has some fungus growth on two elements between the rear of the lens and the aperture mechanism.
I have some experience in repairing lenses but can anyone tell me how to access the inside of this one. I assume from the rear rather than the front of the lens.
Thanks all.


PostPosted: Thu Feb 09, 2023 3:47 pm    Post subject: Reply with quote

Yes. from the rear. Sorry, I can't remember of the rear group unscrew before or after removing the mount. It was relatively simple...