If your eye is exactly in the right place, and your lens is the right focal length, and the f-stop is correct, then a split image rangefinder is fairly accurate. Remember the offset is all but non-existent. It can not compare in any sense to a long base optical rangefinder, and compared to a ruler it is problematic. I can say from personal experience that it is not accurate enough for an 85mm lens at 3 feet and f/2.0 when you want the subjects irises razor sharp every time.
Bob Blakely wrote: > If you have a split image scree that is not dead on accurate, you have an > improperly designed and/or manufactured screen. It would mean that the > center line where the prisms cross is not in the same plane as the ground > glass's frost. FYI, I believe they are "optical" plastic now. > > Regards, > Bob... > -------------------------------------------------------- > "Art is not a reflection of reality. it is the reality of a reflection." > -Jean Luc Godard > > ----- Original Message ----- > From: "graywolf" <[EMAIL PROTECTED]> > > >> Just to give the other point of view, I hate split image focusing devices. >> To me >> they are annoying, right in the middle of the picture where I want to see >> what I >> am looking at, and they are not as accurate as you guys seem to think they >> are. >> Plain ground glass with grid is my choice. It is interesting how many >> folks do >> not trust their eye. > > -- 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.
