On Nov 25, 2006, at 3:21 AM, John Whittingham wrote: >> I personally would not buy a pre-AF zoom lens again, however, >> particularly for the K100D or K10D bodies, as without the focal >> length information transmitted from lens to body, obtaining benefit >> from the antishake technology is a bit more of a pain than I would >> be interested in. It's ok to set a focal length for a prime, a pain >> when the point of using a zoom is convenience in rapidly changing >> circumstances. > > That never occurred to me until you mentioned it, that could have some > serious consequences. I'm not to bothered by the M & A zooms, I > only have > four M 24-35, M 35-70, A 35-105 and A 70-210. But if the Sigma > 70-200/2.8 EX > doesn't communicate the correct information it's going to be a > right PITA, > same goes for the Tamron 28-75 XR Di to a lesser extent. I'd be > left with FA > 28-105 power zoom and FA 80-320 zoom. What about using rear > converters? Like > the F 1.7x and the Sigma EX converters.
As long as the correct focal length appears in the EXIF data, everything should work all right. I have not specifically tested the case with the Pentax Rear Converter-A 2x-S fitted behind a lens known to transmit the correct data. Godfrey -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
