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- From: Jimmy.Tung@dartmouth.edu (Jimmy Tung)
- Newsgroups: rec.photo
- Subject: Re: EOS Teleconverter Question
- Message-ID: <C1FG5C.BMs@dartvax.dartmouth.edu>
- Date: 25 Jan 93 20:41:33 GMT
- References: <1993Jan25.164915.23501@kth.se>
- Sender: news@dartvax.dartmouth.edu (The News Manager)
- Organization: Dartmouth College, Hanover, NH
- Lines: 36
- X-Posted-From: InterNews1.0a5@newshost.dartmouth.edu
-
- In article <1993Jan25.164915.23501@kth.se>
- d90-nsc@nada.kth.se (Niclas Schopenhauer) writes:
-
- ... stuff about teleconverter deleted, ...
-
- > BTW, I recently got a superb night shot of a traffic airliner passing
- > EXACTLY in front of the moon. Those opportunities don't come often!!
- >
- > So you can guess how disappointed I was when I got the photos from
- > the lab and discovered that the picture was very overexposed.
- > I used 200 film, aperture 5,6 and 1/180 sec and a focal length of
- > 300mm. The sky was very clear that night.
- >
- > Does anyone have a clue as to what exposure values I should have
- > used?
- >
- > I really wish my Elan had a spotmeter. (sigh)
-
- On the photo (assuming they aren't slides), how big was the jetliner in
- comparison to the moon? Was the jetliner superimposed on a slightly
- larger circle of reddish-yellow, or was it a moon with the small
- sillouette of a plane in it? Let's ignore all the perception vs.
- reality questions for now :-).
-
- Assuming that you had the Elan in partial meter mode (6%) and the
- subject centered or the exposure lock on, did you exposure compensate
- for a backlit subject? I'd *guess* that at least 1/2 stop to 1 stop of
- overexposure would have been necessary. But this doesn't sound like a
- problem, since you said your pics were overexposed. Could it be
- instead that the lab tech or computer decided to "fix" the pic for a
- perceived underexposure?
-
- BTW, I'm too sure a spot meter would have given you any better results.
- The partial metering through a large lens (9 degree angle of view?)
- would have been pretty close to, if not smaller than a handheld
- spotmeter. Of course, metering on 2% of the viewfinder area, ... ;-)
-