There is no balsam separation. I took a test photo with this lens on my Sony a7. Lens filter. There are no large dusts.
Tested [MINT] Canon FD 135mm f2.5 SC Telephoto Lens for SLR A-1 AE-1 From JAPAN
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![Tested [MINT] Canon FD 135mm f2.5 SC Telephoto Lens for SLR A-1 AE-1 From JAPAN](https://images.buynet.work/thumb.php?i=368761066&s=240)
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