On May 9, 2008, at 2:39 PM, drew wrote: > I have a Vivitar 2x Teleconverter that came with a P30 I bought ages > ago. I have just tried it on my *ist-DL but it does not appear to > meter > correctly, Every shot is overexposed and the aperture does not display > on the camera. It calls itself a PK-A/R-PK. > I suppose by question is, should the camera be able to display the > aperture and should it be able to meter correctly with an A lens?
A proper Pentax-A series lens should allow the body to use all metering modes and control the aperture from the body with the lens aperture ring locked on the A setting. The marking on the teleconverter suggests that it ought to ... PK-A == Pentax-A, R-PK == Ricoh-Pentax K ... but not all of them work correctly. Be careful with lenses that have the PK/R-PK markings ... there are various permutations of this marking. They can jam on the lens mount because Ricoh has a pin that slides into a hole it shouldn't connect to on Pentax-KAF mounts. Godfrey -- 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.
