| Author | Message | ||
     Glenn Middleton Rating: N/A |
Check that the rear of the lens does not exhibit signs of being dropped, ie do operating levers look bent/misplaced? Clean out rear of mount with a stiff/flat artist's brush and then attach lens. Move aperture ring off 'A', use stopdown lever to cycle the lens over the whole aperture range. Do this several times and observe how the lens actually stops down, ie is it sluggish, does it jam. The mount in the 100/2.8, if it is the new FD model, is the 1.4 type. This is the better ball bearing filled item and I have never had them 'seize up'. I have used 25 year old NOS and well used FD lenses that have stood for years, never had this type of problem. Hence my wondering about damage to mount. |