Monday, March 14, 2005, 1:39:46 PM, Sylwester wrote:
SP> Frantisek wrote on 14.03.05 13:24:
>> I too found out a lot of purple fringes - I attributed it to flare
>> though. God knows what it was. But remember that the Sigma in Nikon
>> mount uses HSM - their equivalent of ultrasonic motors. These do make
>> the focusing a lot faster, especially on a body with weak AF motor
>> like the D70. I think on Pentax the difference wouldn't
>> be big?
SP> Well, when I was in Italy last year, we have an opportunity with Dario to
SP> test this Sigma head to head on both - D70 and *istD. And to my surprise AF
SP> on Pentax was about as fast as on D70 at least in good light conditions. Of
Interesting :-) So much about the hype of ultrasonic motors. They can
do just as well with normal ones.
Good light!
fra
