Makes a complete nonsense of using a handheld meter then!!!!!!!!!!!!! John
---------- Original Message ----------- From: Gonz <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Sent: Thu, 04 Nov 2004 16:45:10 -0600 Subject: Re: Stop Down Metering on K, M, LX > Hmmm. You may be right on that, since normal K mount cameras may > depend on this, whereas the *istD does not have it. I'll have to > test this and report my results. > > rg > > Don Sanderson wrote: > > This will work for the aperture but I believe it will > > also throw the cameras meter way off. > > When not fully seated the lever that reports how > > many stops from full open the lens is set won't be > > in the correct position. > > 1/8 of a turn could be several stops. > > > > Don > > > > > >>-----Original Message----- > >>From: Gonz [mailto:[EMAIL PROTECTED] > >>Sent: Thursday, November 04, 2004 3:22 PM > >>To: [EMAIL PROTECTED] > >>Subject: Re: Stop Down Metering on K, M, LX > >> > >> > >> > >> > >>Shel Belinkoff wrote: > >> > >>>Hi Christian, > >>> > >>>A couple of reasons. First, a week or so back JCO made the > >> > >>assertion that > >> > >>>by metering thru a lens set at the taking aperture, measuring the actual > >>>light transited rather than having the camera essentially calculate the > >>>exposure, would result in a more accurate, or precise, > >> > >>exposure. I'd like > >> > >>>to see if there's any truth to that, and if there's any practical > >>>difference. > >>> > >> > >>My guess would be that the difference would be so tiny as to be > >>insignificant. Esp with film since there is so much latitude. > >> > >>But if you are really interested in testing this, an interesting way to > >>do this would be to use Mark's trick with the *istD, that is, mount the > >>lens so that it is not fully locked, to a position such that the lever > >>that keeps the aperture wide open is not engaged. I believe he said it > >>was about 1/8 of a turn or so, but check with him. This is ok for tests > >>like you want to do, but I would not recommend this for everyday > >>shooting, as the lens is in somewhat of a precarious situation not fully > >>locked in and could fall off. > >> > >> > >> > >>>Also, I want to compare two similar lenses, one being a Super > >> > >>Tak that can > >> > >>>only be used stopped down on K bodies and the other being a K > >> > >>mount version > >> > >>>of the lens. It would seem that if the metering styles used > >> > >>were the same > >> > >>>(assuming there IS any difference as suggested by JCO), the comparison > >>>between the two lenses may be more accurate. > >>> > >>>However, I doubt that I'd want to shoot that way when making regular > >>>photographs. > >>> > >>>Oh, there's a third reason: I've just a little too much time > >> > >>on my hands > >> > >>>right now <LOL> > >>> > >>>Shel > >>> > >>> > >>> > >>> > >>>>[Original Message] > >>>>From: Christian <[EMAIL PROTECTED]> > >>> > >>> > >>>>>Is there a way to use a K-mount lens on the K, M, or LX bodies with > >>> > >>>stop > >>> > >>> > >>>>>down metering instead of having to use open aperture? > >>> > >>> > >>>>Just a silly question, and forgive my ignorance, but why would you want > >>> > >>>to? > >>> > >>> > >>> > >> > > > > ------- End of Original Message -------
