Rubber casing of lens gummy;difficult to extend or shorten lens
Was in camera bag with camera and other lens and no problem with other lens. i am extremely careful and did not expose lens to any pills/etc.now outside rubber casing extremely sticky.i use this on both a minolta traditional 35mm camera and a sony alpha digital camera.
Cameras - Sigma - 70-300mm f/4-5.6 DG APO Macro Lens
Answers & Comments
Did the lens get hot (closed in hot car)?- probably melted some of internal lubricant and /or adhesive on rubber rings or caused the rubber ring itself to start to deteriorate