I just received a Canon 50mm 1.8 FD lens. question for Dianne B

Started Apr 10, 2009 | Discussions thread
ForumParentFirstPreviousNextNext unread
Flat view
S601superflow
Regular MemberPosts: 238Gear list
Like?
I just received a Canon 50mm 1.8 FD lens. question for Dianne B
Apr 10, 2009

It looks in very good condition serial # is 6393177
I have purchased a jinfinance Canon FD to m4/3 adapter on the way too.

I am not familiar with this lens . I am concerned about the iris movement, it has a five blade iriswhen set to f1.8 with out the back cover it is open to about 5mm on each blade. if I fit the back cover it closes down to about 3mm of each blade

with the back off if I turn the ring to f22 it closed to about 1.25mm of blade if I remove the back then the iris opens again to 5mm of blade.

Is this situation normal ? Or do I have a dud?

At F1.8 should the iris be fully open? or will this only occur when placed on the adapter & camera.

Any input will be appreciated.
Thanks in advance

Lew
South Australia

 S601superflow's gear list:S601superflow's gear list
Panasonic Lumix DMC-GH4
ForumParentFirstPreviousNextNext unread
Flat view
ForumParentFirstPreviousNextNext unread
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow