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Thread: Exposing a gray scale for Zone System calibration

  1. #11

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    Re: Exposing a gray scale for Zone System calibration

    Quote Originally Posted by faberryman View Post
    Dare I mention reciprocity failure in calculating the exposures?
    Apparently not. The quicksand doesn't need more water!

  2. #12

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    Re: Exposing a gray scale for Zone System calibration

    Quote Originally Posted by Jac@stafford.net View Post
    Permit dissent. The Zone System today is a wasteful distraction
    Can elaborate.
    .
    Do you mean, somehow, it WASN'T yesterday?

  3. #13
    Peter De Smidt's Avatar
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    Re: Exposing a gray scale for Zone System calibration

    For the most current and comprehensive book on BW photography, see: https://www.amazon.com/Way-Beyond-Mo.../dp/0240816250
    “You often feel tired, not because you've done too much, but because you've done too little of what sparks a light in you.”
    ― Alexander Den Heijer, Nothing You Don't Already Know

  4. #14

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    Re: Exposing a gray scale for Zone System calibration

    Quote Originally Posted by Peter De Smidt View Post
    For the most current and comprehensive book on BW photography, see: https://www.amazon.com/Way-Beyond-Mo.../dp/0240816250
    No offense, but why not add IMHO?

  5. #15
    Peter De Smidt's Avatar
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    Re: Exposing a gray scale for Zone System calibration

    Quote Originally Posted by xkaes View Post
    No offense, but why not add IMHO?
    That would be redundant.
    “You often feel tired, not because you've done too much, but because you've done too little of what sparks a light in you.”
    ― Alexander Den Heijer, Nothing You Don't Already Know

  6. #16

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    Re: Exposing a gray scale for Zone System calibration

    Quote Originally Posted by Peter De Smidt View Post
    That would be redundant.
    Superfluous, perhaps, but certainly not redundant.
    Last edited by xkaes; 11-Jul-2017 at 10:22.

  7. #17

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    Re: Exposing a gray scale for Zone System calibration

    Click image for larger version. 

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    Here is my data card from such a test series. I mounted a 35mm body to front of lens to get "quartz" controlled shutter speeds. That wasn't a totally bad idea but it caused vignetting that led me to conclude my EI should be 64 for TMY-2.

    It was a lot of work and got me Tungsten test results.

    I included reciprocity failure information.

    One valuable takeaway from this test. You sure learn the logarithmic nature of exposure after making several runs of this.

    A seven-dollar Stouffer scale is so much easier.

    Who disturbs the peace as a pebble disturbs a pond? Ed Gruberman? The Zone System is a journey towards the horizon not for beating people up.

  8. #18

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    Re: Exposing a gray scale for Zone System calibration

    Quote Originally Posted by Bill Burk View Post
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    A seven-dollar Stouffer scale is so much easier.

    Who disturbs the peace as a pebble disturbs a pond? Ed Gruberman? The Zone System is a journey towards the horizon not for beating people up.
    I've saved a lot of time -- and learned a lot -- from using Stouffer and Kodak scales. I still will -- time is money.

    He who moves a grain of sand in the desert changes the world.

  9. #19
    Kevin Kolosky
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    Re: Exposing a gray scale for Zone System calibration

    See if you can get ahold of a Kodak Professional Photoguide with the gray scale and gray card in it. It has 8 different tones. But remember, there are a couple of stops between shade and sunlight as well, so expose the scale in the shade and in the sun. Develop for the recommended time and temp and make a few contact prints with your chosen paper to get the information you are looking for. 1. Your negs were exposed for too long or too little, and/or 2. your negs were processed too long or too little.

  10. #20

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    Re: Exposing a gray scale for Zone System calibration

    The Zone System today is a wasteful distraction

    Possibly, once you fully understand it and have practiced it enough to be sure of that. As a step up from taking a light meter reading and exposing at box speed, however, it has served generations of self- and professionally-taught photographers. Sure, eventually it starts to look like applied sensitometry with hard lessons about process control, but there are reasons why it was introduced so long ago and is still around today.

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