Nope, I mean AF-S, the Nikon USM equivalent. Any ring-type AF-S lens
also offers full time manual focus (the only two Nikon micro-motor AF-S
lenses are the 18-55 DX and 55-200 DX)
-Adam
Godfrey DiGiorgi wrote:
You mean "EF-S" rather than "AF-S". Yes, Adam, I'm aware of the
differences between various types of Canon lenses. I have several of
them, after all. ;-)
I await the D-FA versions of the Pentax 35/2 AL, 50/1.4 and 77/1.8.
Godfrey
On Dec 17, 2005, at 4:04 PM, Adam Maas wrote:
Godfrey, all ring type USM or AF-S lenses have this feature. The
only other lenses that do are the Pentax ones and the Canon 50mm
f1.4 USM which is the only micro-motor USM lens to be clutched
(Pentax uses the same trick to get the feature). It's very useful,
and I badly miss it on my Tamron 28-75.
-Adam
Godfrey DiGiorgi wrote:
I think you are describing the QuickShift feature of the DA and D-
FA lenses, Patrice. Has nothing to do with the DS2. DA lenses on
the DS and D act the same way. It usually does NOT work in AF-
Continuous mode, however, as the body/lens is supposed to be
focusing continuously. It's designed to work in AF-Single Shot
mode ... lock in the focus on the half press, fine-tune focus with
the focus ring.
Canon's USM lenses have this feature and call it "full time manual
focus". It's an excellent feature.
Godfrey
