Archived posting to the Leica Users Group, 1996/12/26
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]In article <199612262033.OAA02554@telepath.com>, "Richard W. Hemingway" <n5xrd@telepath.com> writes >"Of course, when focusing is effected by hand, the AF module and the >automatic exposure metering (which normally work in unison) are disengaged." >Then in the next paragraph it continues: >"This means that once the lens has been focused manually at infinity it is >still possible to take a substitute exposure reading on the foreground and, >maintaining slight pressure on the shutter release button, store the value >before re-framing the subject." That is not worded well, but I understand it to mean that a] With autofocusing set, both distance and exposure are locked simultaneously by first pressure on the shutter release. You cannot lock just exposure even if you wanted to for (say) a backlit subject by locking exposure from a reading from an alternative subject, without also locking the focusing distance to your alternative subject at the same time. If your alternative subject was at the same distance as the chosen subject this would be ok, otherwise it would be a problem. b] With manual focusing set on a chosen subject distance, which might or might not be infinity, if you had (say) a tricky backlit subject, you could lock an exposure reading on something other than the subject and the focusing would remain at the manually set distance you had chosen. - -- Joe Berenbaum