09-29-2010, 08:24 PM
[quote name='Yakim' timestamp='1285788664' post='3372']
I vividly remember my experience with AFD lenses. 24/2.8 and 135/2.8 (IF design) were faster, sometimes noticeably so, than 35/2, 50/1.8 and 50/1.4 which extend during focusing. So I guess we'll have to agree that we disagree on that.
[/quote]
[quote name='Klaus' timestamp='1285789038' post='3373']
IF/RF designs are faster than extension systems unless somebody messed up the mechanism. I would agree here.
[/quote]
As compared to non-IF USM lenses. Furthermore, I didn't say all.
Kind regards, Wim
I vividly remember my experience with AFD lenses. 24/2.8 and 135/2.8 (IF design) were faster, sometimes noticeably so, than 35/2, 50/1.8 and 50/1.4 which extend during focusing. So I guess we'll have to agree that we disagree on that.
[/quote]
[quote name='Klaus' timestamp='1285789038' post='3373']
IF/RF designs are faster than extension systems unless somebody messed up the mechanism. I would agree here.
[/quote]
As compared to non-IF USM lenses. Furthermore, I didn't say all.
Kind regards, Wim
Gear: Canon EOS R with 3 primes and 2 zooms, 4 EF-R adapters, Canon EOS 5 (analog), 9 Canon EF primes, a lone Canon EF zoom, 2 extenders, 2 converters, tubes; Olympus OM-D 1 Mk II & Pen F with 12 primes, 6 zooms, and 3 Metabones EF-MFT adapters ....