On 30 Dec 2003 at 10:39, Dag T wrote: > OK, but if a 22.5mm FF lens has an angle of view of 88mm (a didn�t > remember those numbers), the FOV factor of 1.5 of the *istD should > indicate that a new DA lens with this angle of view would be a 15mm.
OK now I'm confused. If the diagonal angle of view across an APS frame (almost the same as the *ist D sensor) is 88� then this lenses actual FL would be approximately 18mm. If this same 18mm lens covered a 35mm frame it would provide a 100.5� diagonal angle of view in that format. > A DA 15mm f/3.5 would be very interesting.... Not for those of us who already own an SMCPA15/3.5, an 18/2.8 would be nice though. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
