Full time manual focus on USM lenses

Started Jan 7, 2013 | Questions thread
Shop cameras & lenses ▾
ForumParentFirstPreviousNextNext unread
Flat view
Junior MemberPosts: 42
Full time manual focus on USM lenses
Jan 7, 2013


I know that USM lenses allow Full time manula focus, so that you can turning the focusing ring in one shot after focus achieved while keeping pressed halway the shutter button.

The question is: if if turn the focus ring WHILE the lens is autofocusing, so while the lens is moving, can I damage the lens?

For example the lens is going from macro mode toward infinite and I turn the ring in the opposite direction, can I damage the lens?

Some say no, because there are no gears with USM lenses... Canon doesn't tell anything about...

Thanks a lot!!!


This question has not been answered yet.
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