Not sure if it's fungus or whats left on the glass after cleaning.
Sigma Filtermatic 24mm f2.8 Super Wide Angle Lens for Canon FD Fit or DSLR *READ
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Canon Lens FD 100mm f2.8 Portrait Prime Lens for Canon FD Breechblock Fit & DSLR
Canon FD Macro 50mm f3.5 Prime Lens for Fit Canon FD Fit or DSLR
Canon New FD 35-70mm F/3.5-4.5 Zoom Lens Canon FD Mount
