Fix | Quicklens 2.8

: A popular "quick fix" for this specific lens is applying a 65mm x 1.5mm O-ring just below the zoom ring to add friction.

: If the lens won't communicate at f/2.8, clean the gold metal contacts with a pencil eraser or a Q-tip with a tiny amount of alcohol. 3. Software/Coding Library QuickLens 2.8 fix

: Common in vintage 28mm f/2.8 lenses due to oil leakage. A "quick" fix involves applying a micro-drop of Isopropyl Alcohol (99%) or Naphtha to the blades and cycling the aperture to dissolve the grease. : A popular "quick fix" for this specific