Mark misunderstood your question. the FA* lenses are all faster in terms of larger aperture. the FA* 80-200 is f2.8. compare that with the FA 80-200 f4-5.6. they are, if anything, slower in focusing speed since the moving elements are heavier, but Pentax presumably designed the AF motors to be strong enough to achieve adequate times on lenses with lots of moving elements. i was surprised how fast the AF worked on my Sigma 50-500. doesn't feel any different in speed from my FA 24-90.
Herb.... ----- Original Message ----- From: "Keith Whaley" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, September 16, 2003 5:19 PM Subject: Re: FA* lenses > Then why the statement "They are faster than non-FA* lenses?" > > keith > >
