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  1. #11
    tiberiustibz's Avatar
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    I'm getting the sense that this is some sort of riddle.

    Quote Originally Posted by JBrunner View Post
    Her red dress always came out black.
    On what basis did she judge the overexposure?

  2. #12

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    What Nikon camera was that? Sounds like a symptom an old Photomic meter might exhibit if it was failing.

  3. #13
    tiberiustibz's Avatar
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    Guess I missed the deadline...

  4. #14
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    [QUOTE=tiberiustibz;756616]I'm getting the sense that this is some sort of riddle.
    ******
    In a sense it was because one has to go from where the person asking for a solution to the problem is "at." They can't always provide the info we need to solve the problem in the first go around. I used to try to train the kids who worked for me to speak "customereeze." This was not a pro shop with professional customers; just every day people. Learning to ask the right questions was very important.
    John, Mount Vernon, Virginia USA

  5. #15
    Anscojohn's Avatar
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    Quote Originally Posted by rthomas View Post
    What Nikon camera was that? Sounds like a symptom an old Photomic meter might exhibit if it was failing.
    ******
    Don't remember. I know it was not an F, though; a Photomic would stick in my memory. Some of the various situations were pretty amusing: like the lady who insisted the lab "had mixed her pictures up with someone elses." Yup, it happens. And she got half a roll of her pix, and some of another person's. Yup, that happens to. And, not only that, the lab mixed up her pictures with her mother's pictures. Hmmm, sez I to meself, sez I as I put the tracer book back.. It transpired they were on vacation together; with the same P and S cameras; Is it possible, I finally ask, that perhaps you just picked up her camera by mistake one day......???. Oh, yeh, I guess that's it, sez she.
    John, Mount Vernon, Virginia USA

  6. #16
    MattKing's Avatar
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    I have a couple of Olympus bodies that feature metering off the film. I've always wondered if there is any significant variation of reflectivity between film types. I was going to suggest that as a cause, if no one else came up with a solution.

    Matt

  7. #17
    Anscojohn's Avatar
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    Quote Originally Posted by MattKing View Post
    I have a couple of Olympus bodies that feature metering off the film. I've always wondered if there is any significant variation of reflectivity between film types. I was going to suggest that as a cause, if no one else came up with a solution.

    Matt
    *****
    That's an interesting point, Matt. One would ASS u ME that the emulsion reflectance would be pretty consistent; but I wonder......
    John, Mount Vernon, Virginia USA

  8. #18

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    There are slight differences between films, yes.
    So you need to learn how your favourite films behave, and possibly adjust your metering accordingly.

    Old data, but illustrative all the same:

  9. #19
    BetterSense's Avatar
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    Is that data from Olympus? I understand that most common-speed exposures were actualy metered mostly off the shutter curtains, and only longer tripod-domain exposures metered off the film itself.

  10. #20

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    It's data from Hasselblad, to be used with their OTF flash metering.
    They measured the reflectivity of the films available then.

    You're partly right about the curtains.
    Anything of 1/60 and longer is meassured entirely (or as near as) off film.
    Faster speeds progressively more off the curtains, increasingly less off the film.

    P.S.

    Or have i got it wrong now, and is the OTF measuring only used for longer speeds indeed?
    Last edited by Q.G.; 02-22-2009 at 12:17 PM. Click to view previous post history.

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