That doesn't sound very healthy, the SDM lenses aren't speed demons but the two I have do focus quite fast.
John ________________________________________ From: pdml-boun...@pdml.net [pdml-boun...@pdml.net] On Behalf Of William Robb [war...@gmail.com] Sent: 11 April 2009 23:13 To: Pentax-Discuss Mail List Subject: Re: K20D firmware update ----- Original Message ----- From: "John Whittingham" Subject: RE: K20D firmware update > Just how slow can it be? Slower than an FA prime? > > When I initially tried my first SDM lens I thought it was slow, until I > realised I hadn't enough pressure on the shutter release to activate AF on > the odd occasion Doh! The 55/1.4 takes almost a second to travel from close focus to infinity. This is about 3 times longer than what it takes for the FA50/1.4 to do the same thing. And while the motor is silent, the mechanism is far from silent. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
