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Thread: Incident meter technique

  1. #11

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    Re: Incident meter technique

    Quote Originally Posted by Randy View Post
    That's fine Ken, just ignore the fact that I had just posted a link to your web page...doesn't hurt my feelings at all...
    Sorry - I didn't see that you had posted an actual link. The link color is rather close to that of the ordinary type.

  2. #12
    Randy's Avatar
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    Re: Incident meter technique

    Yes, the link color has been problems before. I wonder if it can be changed...
    https://dl.dropboxusercontent.com/u/52893762/bigger4b.jpg

  3. #13

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    Re: Incident meter technique

    I don't know about that, but when I want to emphasize one, I change the color, like this: Large Format Photography. I use the color "0000FF", which is 100% blue.

  4. #14

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    Re: Incident meter technique

    If I were to point my meter at 18% (example) using reflective light mode, I would get the same reading if I used the incident correctly? Sorry for being so dense
    Principal Unix System Engineer, Yoyodyne Propulsion Systems

  5. #15

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    Re: Incident meter technique

    Quote Originally Posted by Old_Dick View Post
    If I were to point my meter at 18% (example) using reflective light mode, I would get the same reading if I used the incident correctly? Sorry for being so dense
    The answer is "probably not". It depends on the angle of the reflected light from the card and the light source. If there is "glare" on the card, and that is common, it throws things off. An incident meter can't respond to glare.

  6. #16

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    Re: Incident meter technique

    Glare aside, there is some controversy about the use of the 18% gray card to determine the middle gray of a scene.

    You might find this brief article helpful: The Myth of the 18% Gray Card

  7. #17

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    Re: Incident meter technique

    It's easy to check yourself -- if you have the gear. Take an incident reading of a subject and a reflectance reading off a gray card in front of the subject. Depending on what you consider "different", they will be.

  8. #18
    8x10, 5x7, 4x5, et al Leigh's Avatar
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    Re: Incident meter technique

    Quote Originally Posted by Ken Lee View Post
    Glare aside, there is some controversy about the use of the 18% gray card to determine the middle gray of a scene.
    There's no controversy in the camera repair industry.
    An 18% reflectance is the value used to calibrate light meters.

    The problem in the user world is that most folks don't understand how to use grey cards.

    - Leigh
    If you believe you can, or you believe you can't... you're right.

  9. #19

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    Re: Incident meter technique

    There is no controversy because there can't be any controversy because there is no controversy because there can't be any controversy.................

    And that's that.

  10. #20
    Bob Sawin's Avatar
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    Re: Incident meter technique

    This may be a silly question but when pointing the meter back toward the camera should it be held vertically or horizontally?


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    Bob
    CEO-CFO-EIEIO, Ret.

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