which is 300 equivallent on an ist-D ;) That said I like to consider constant f/4 as being consumer and constant f/2.8 as being semi-pro/pro ;) I know, more like wishful thinking :D
2005/6/28, Godfrey DiGiorgi <[EMAIL PROTECTED]>: > > On Jun 28, 2005, at 12:52 PM, Jens Bladt wrote: > > > The SMC Pentax-F 4-5.6/70-210mm is very good, in fact it's excellent. > > ... - although quite slow (4-5.6 is a consumer "speed" = affordable > > for most people). > > f/4 is slow for a 70mm lens, but f/4-f/5.6 isn't that slow for a > 200mm lens. The problem with long lenses is getting *enough* DoF, > particularly when close ... Most of the time I find myself shooting > at f/11-f/22 with anything longer than 135mm. > > Godfrey > > -- ---------------------- Thibouille ---------------------- *ist-D,Z1,SuperA,KX,MX and KR-10x ...
