Smooth focus and Snappy aperture. Overwise clear so should not affect performance.
Vintage VIVITAR 28mm f2.5 Wide Angle Lens C/FD Mount with Front and Rear Caps
Vivitar 28mm f2.8 Wide Angle Lens, Excellent Condition, No Mold & Haze
Vivitar 28mm F2.8 MC Close Focus Manual Focus Lens Olympus OM Fit + cap om10
Vivitar Wide Angle 28mm F2 Nikon F AI with both caps
Vivitar Wide Angle 28mm F2 Nikon F AI
SUN Japan 28mm F2.5 Fast Wide Angle Lens for OLYMPUS OM SLR fit. CASE+caps CLEAN
