Smooth focus and Snappy aperture. Overwise clear so should not affect performance.
VIVITAR 28mm F2 Wide Angle Lens for CANON FD SLR fit PARTS REPAIR
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
