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  1. #11

    Join Date
    Jun 2006
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    Quick follow up

    Helen, a quick followup:

    I could probably search for this, but if you'll indulge me...

    What's the difference between f/8 @ 100 (flash) and EV 5 @100. I've never used EV and have never really tried to understand. I do know that when I was fooling around with the new spot attachment in my living room after it arrived, I was unable to read dark spots in the room under normal (dim) incandescent light.

    I guess I'm wondering if it'll be worth it to keep this thing or get something more purpose-built. I guess the only way to know is to take it out into the wild and try it!

    Thanks again for all your help,
    Blake

  2. #12
    Helen B's Avatar
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    Jul 2004
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    Blake,

    EV 0 is 1 second at f/1, and any other combination giving the same exposure (2 seconds at f/1.4, 4 seconds at f/2 etc). EV 5 is 1 second at f/5.6 or 2 seconds at f/8 or 4 seconds at f/11 etc. When used with a film speed (usually ISO 100) it's a convenient way of describing the sensitivity of a hand-held meter. In this case the meter will tell you the correct shutter speed for ISO 100 film and f/5.6, f/8, f/11 etc at the meter's lowest sensitivity limit. (This isn't quite the same with TTL meters, but that's a different subject)

    For flash measurement the shutter speed is irrelevant, so the sensitivity of the meter is best described with just an aperture and a film speed. The meter, if it performs according to Sekonic's specifications, will not show f/5.6 for ISO 100 film when used in the flash mode because the meter is not sensitive enough. It will only show f/8, f/11 etc, depending on how much light energy there is in the flash pulse.

    I'm not convinced that I've answered your question, but it's a start.

    Best,
    Helen
    Last edited by Helen B; 01-21-2007 at 07:22 PM. Click to view previous post history.

  3. #13

    Join Date
    Jun 2006
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    Meter

    So do you use this meter/attachment combo, or do you find a more traditional meter like the pentax digital spot more usefull to you? I'll probably keep it until I know it won't suit my needs.

    I've been a photographer for a long time, and understand exposure etc., I'm just trying to expand my horizons into b/w, something I've not done with any seriousness before. Asking those who know is the best way to learn, so thanks.

    By the way, I'll probably be asking for pt/pd printing help in a few weeks!

    Blake

  4. #14
    DrPablo's Avatar
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    Aug 2006
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    I have the exact same problem with the 1 degree spot attachment for the L-358. For scenes that are otherwise easily metered I very frequently get an E.u. reading.
    Paul

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