Listing Parafocal lenses for A-mount

Started Apr 17, 2012 | Discussions thread
Shop cameras & lenses ▾
Keith Hanlan
Regular MemberPosts: 292Gear list
Re: Listing Parafocal lenses for A-mount
In reply to Maxxuman, May 2, 2012

Maxxuman wrote:

I wonder if it's easier to make a fixed aperture lens (like the beercan) parfocal than one on which the minimum aperture varies while zooming?

I think it would make it harder as the ability to stay wide open at all focal lengths is an additional constraint on the design.

 Keith Hanlan's gear list:Keith Hanlan's gear list
Konica Minolta Maxxum 7D Sony Alpha DSLR-A580 Sony a77 II Tamron SP AF 10-24mm F/3.5-4.5 Di II LD Aspherical (IF) Tamron SP AF 90mm F/2.8 Di Macro +9 more
Reply   Reply with quote   Complain
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow