Hi Tim - I have a Tokina 400/5.6 too, mine is marked "RMC". It works well on the Pentax digitals, on my ist-D simply use it like any other non-A lens. At full aperture, you can use it on "P", but for proper use, set the camera to "Manual" and use the green-button "kludge" to control aperture and shutter speed. I've found this a good sharp lens, even at full aperture, and fairly easy to hand-hold because it's long but not too heavy.
HTH John in Brisbane -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Tim Bray Sent: Tuesday, 9 June 2009 7:51 AM To: ?Pentax-Discuss? Mail? List?? Subject: Old-lens tutorial? I went and bought a Tokina 400mmF5.6 K-mount on EBay. I'm looking at the instructions in the K20 booklet and they're sort of gnomic; there's a custom-menus thing that allows the use of an aperture ring, but best practices aren't obvious. Anyone want to recommend a good write-up on how to get this kind of thing to work nicely with a modern camera? I guess it'd be all-Av-mode-all-the-time, right? -Tim -- PDML Pentax-Discuss Mail List [email protected] 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 [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
