How come no other cheapies like Nifty Fifty?

Started Feb 14, 2012 | Discussions thread
Shorthand Senior Member • Posts: 2,974
Re: How come no other cheapies like Nifty Fifty?

As far as I can tell, EF-S doesn't buy very much extra back-focus distance behind the flange. Look at how little EF-S lenses actually protrude behind the flange - its 7-8 mm, no more.

I think a 40mm EF-S double-gaussian would be possible, but probably not a 35mm (otherwise I think Canon would have done it already).

It does enable less extreme retrofocus designs (17-55 f/2.8 & 10-22 are both examples), but it doesn't give a meaningful extension to the range which symmetric lenses can cover.

 Shorthand's gear list:Shorthand's gear list
Sony RX100 Canon EOS 300D Canon EOS 450D Canon EOS 500D Canon EOS 7D +12 more
Post (hide subjects) Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow