Actually if the intent was for APS cameras only, the coverage could be reduced and the lens performance increased via more baffling, different optical designs, etc. jco
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Godfrey DiGiorgi Sent: Tuesday, October 02, 2007 4:11 PM To: Pentax-Discuss Mail List Subject: Re: DA70 and 24x36 coverage On Oct 2, 2007, at 12:27 PM, John Francis wrote: >> Godfrey, I find it incredibly strange that Pentax produced DA 40 >> and DA >> 70 that cover full frame (presumably, but most probably so) obviously >> knowing it and not having advertised it in any way. > > Why? The lenses work just fine with all camera bodies Pentax > currently sell. > > I doubt if they've even been tested on an old film body to see > whether they > vignette, or whether the corner resolution meets whatever criteria > Pentax use. Exactly. Pentax no longer makes 35mm film SLRs, they're not testing DA lenses for use on them. The fact that these lenses are usable is a happy accident, not an intent. 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. -- 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.
