The missing focal length in the series 17.5, 25, 35, 50, 70*, 100, 140, 200, 280, 400, etc.
*Except for the 70 there has always been something within a few percent of that square-root-of-two series. -- graywolf http://www.graywolfphoto.com http://webpages.charter.net/graywolf "Idiot Proof" <==> "Expert Proof" ----------------------------------- mike wilson wrote: > Unusual length for 35mm. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
