the problem is that he is making these claims on cameras using TTL metering (open aperture) that assume the selected f-stop and shutter speed combination is not only perfect, but also that changing the speed and aperture settings to what is theoretically the equivalent exposure is also perfect even though a DIFFERENT compensation may needed from the first one. The meter cant be right for both but it indicates the same. JCO
> -----Original Message----- > From: Mike Ignatiev [mailto:[EMAIL PROTECTED] > Sent: Wednesday, June 11, 2003 4:45 PM > To: [EMAIL PROTECTED] > Cc: J. C. O'Connell > Subject: Re[2]: Exposure > > > So make a table: > Lens | Shutter Speed | Aperture | Compensation > ------------------------------------------------- > | | | > What's the big deal? I was not saying it's not random. That is > irrelevant. What matters is that it's reproducible to withing > your tolerances. > > If your cammera gives you random shutter speeds at the same > position of the dial, or the same lens has different aperture > openings at the same aperture setting (over the tolerances) -- > that means the equipment is junk. > > Mishka > > -----Original Message----- > From: "J. C. O'Connell" <[EMAIL PROTECTED]> > To: "Mike Ignatiev" <[EMAIL PROTECTED]>,<[EMAIL PROTECTED]> > Date: Wed, 11 Jun 2003 16:02:13 -0400 > Subject: RE: Exposure > > > shutter speed and aperture variations are random from > > stop to stop and speed to speed. There is no way > > to "calibrate" them out of the system. Especially if > > youre using different lenses which may not match > > each other stop for stop. > > JCO >
