Not significantly to either for USM lenses. The motor adds about as much
weight as removing the mechanical linkage saves. It's cheaper to
manufacture, and adds only slightly to the diameter of the lens for most
lenses.
-Adam
Juan Buhler wrote:
I might be wrong, but wouldn't an usm motor add to the price, bulk and
weight of the lenses?
j
On 3/20/06, Godfrey DiGiorgi <[EMAIL PROTECTED]> wrote:
How so? If they design the lenses and the new mount to be compatible,
it adds an option not subtracts one.
Godfrey
On Mar 20, 2006, at 10:51 AM, Juan Buhler wrote:
I hope that doesn't happen.
There are a few of us who couldn't care less about auto focus. If I
want ultrasonic motors in my lenses I know which brand to buy. If
Pentax goes that way, I see it as having yet one less option
available.
j
On 3/20/06, Sylwester Pietrzyk <[EMAIL PROTECTED]> wrote:
K.Takeshita wrote on 25.02.06 19:44:
OTOH, I do not believe Pentax abandoned FF lenses altogether. We
still need
fast tele (200/2.8, 300/2.8 etc etc) and I just cannot imagine,
Pentax
being so well recognized as a superb lens maker as well, simply
drop out of
normal lens biz. I think the recent lens road map is really for
the digital
compatibility particularly on the wider end.
Well Ken, if my (quite reliable) source of Pentax information is
right -
then new DA f2.8 lenses will have built-in AF motor (I guess
ultrasonic one)
and that would be a reason to change whole line of long lenses ;-)
--
Juan Buhler
Water Molotov: http://photoblog.jbuhler.com
Slippery Slope: http://color.jbuhler.com
