if your lens system had fully automatic apeture, (I am not reffering to anything related to metering which is a seperate issue),and you are using manual exposure, (metering is not an issue) do you really think you would be focussing and composing with the lens stopped down if you didnt have to? Who does this when they dont have to and why? It just doesnt make any sense to me, and just because its so called "not a problem", doesnt mean the stopped down technique is as good as autoaperture technique is. Thats why autoapeture lens systems were developed and have been in use for over 40+ years by all the SLR camera companies....
jco -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bob W Sent: Thursday, February 15, 2007 4:22 PM To: 'Pentax-Discuss Mail List' Subject: RE: Pentax K 28mm f2.0 Lens > It seems to me that shooting a fast lens stopped down a > couple of stops > would give a similar viewfinder > brightness as using a zoom lens wide open, but you would have > the benefit > of a generally higher contrast image to work with. > I can't believe people can't figure this out and choose to > argue about it > instead, > since we've been manually focusing zoom lenses in the > f/4-f/5.6 maximum > aperture range for a > couple of decades. > Obviously, it's doable. > that was precisely my thinking when I bought the Carl Zeiss adapter for my E-system cameras. The kit zoom is a 3.5-5.6 thing. My CZ lenses range from 1.4 to 2.8 wide open, and are generally at their best around 5.6. So the viewfinder is plenty bright enough when I use them, and I'm not particularly worried that I lose stopped-down metering, even when I focus manually. If I need to shoot with a smaller aperture it hasn't been a problem so far. Bob -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
