Consumer speed? Yes, I have noticed, that pro's use 2.8 lenses (or faster) a lot. These lenses give you a choise of DOF, a very bright viewfinder and often the same aperture through out the zoom range, whic is great for studio flash work. The SMC Pentax FA 2.8/80-200mm costs appr. 5000 USD in my country. That's NOT a consumer lens and appr. 10-15 times as much as I paid for my F 70-210mm! Consumer lenses are the ones you have to pay for your self. Pro lenses are the ones that your custumers/klients will pay for - indirectly, of course.
Jens Bladt mailto:[EMAIL PROTECTED] http://hjem.get2net.dk/bladt -----Oprindelig meddelelse----- Fra: Thibouille [mailto:[EMAIL PROTECTED] Sendt: 28. juni 2005 22:41 Til: pentax-discuss@pdml.net Emne: Re: consumer speed ?? 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 ...
