Set to full and you will have the full range of focus travel, switch to limit above 0.6m and you get 0.6m to infinity. Switch to limit below 0.6m and you have the true macro range up to 0.6m. I presume we're talking about the FA 100/2.8
John ________________________________________ From: pdml-boun...@pdml.net [pdml-boun...@pdml.net] On Behalf Of Tanya Love [tanyal...@bigpond.com] Sent: 02 May 2010 23:27 To: 'Pentax-Discuss Mail List' Subject: RE: limiter thingee.. [Scanned][Spam score:8%] Ok, so how far do I turn the knob thingee around? There is no scale printed on it to indicate the focus distance? Tan. -----Original Message----- From: pdml-boun...@pdml.net [mailto:pdml-boun...@pdml.net] On Behalf Of drd1...@gmail.com Sent: Sunday, 2 May 2010 11:07 AM To: Pentax-Discuss Mail List Subject: Re: limiter thingee.. What they said. When this thing starts to hunt without the limiter it can turn into a long winter. -----Original Message----- From: John Sessoms <jsessoms...@nc.rr.com> Date: Sat, 01 May 2010 19:29:09 To: <pdml@pdml.net> Subject: RE: limiter thingee.. From: "Tanya Love" > I just saw all of the techo talk on the other thread about a > recommended portrait lens and references to the FA 100m/2.8 macros, > which I have, thanks to Steve, just been enabled with. > > Can someone put all of this stuff into fairygirl speak for me? Just > what does that limiter thingee do anyways? What I understood is: For a LONG THROW Macro lens like the FA100/2.8, *IF* the auto-focus has to hunt & goes all the way to infinity and back to closest focus and then to whatever the subject distance is, it takes a LOOOOOOOOOOONG time getting there. A Focus limiter limits the range over which the lens can hunt - instead of going from closest focus to infinity and beyond, you can "limit" the range over which it is allowed to hunt for focus - say between 1.5 meters and infinity or such. It can hunt through this limited range much more quickly than it can through the entire focus range. Apparently most of the long throw is in the last bit going down to closest focus. -- 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. -- 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.
