70-400G lens

Started 3 months ago | Discussion thread
quatpat
Contributing MemberPosts: 836
Like?
Re: 70-400G lens
In reply to Calico Jack, 3 months ago

Calico Jack wrote:

Secondly, any lens with HSM/SSM/USD is essentially a regulator for AF speed, so for fast moving subjects where the focal point changes constantly, a screw-drive lens is superior.

Sorry, but this statement doesn't make much sense at all. I own several long screw-driven lenses and have tried out several HSM/SSM/USD lenses, and my experience is quite the opposite. While the later ar not necessarily quicker in AF-speed, they normally track with smaller increments, which gives a higher AF-precision when tracking.

qp

Reply   Reply with quote   Complain
Post (hide subjects)Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow