A different home made densiometer?

Discussion in 'B&W: Film, Paper, Chemistry' started by Robert, Jun 6, 2003.

  1. Robert

    Robert Member

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  2. bmac

    bmac Member

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    Looks interesting. I actually got an old densiometer with a bunch of surplus photo gear last weekend. I haven't had a chance to check it out. If it is operational, I'd be morethan willing to loan it to fellow APUGGIES as long as they foot the shipping.
     
  3. Robert

    Robert Member

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    Just came home from Radio shack. They don't stock the cds cell anymore. I may end up having to order one. There goes the instant gratification bit.
     
  4. glbeas

    glbeas Member

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    I have some cds cells laying around in the basement. Want em?
     
  5. Robert

    Robert Member

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    Thanks. I spent some time on the phone after getting back. Active reacted with confusion. Proof the world is going to the dogs. I then check the net for suppliers and found a place not more then a 15 minute drive from here. They also have a few other things I might be able to use. So I'm just picking them up when I drive by during the week. Place sounds interesting.
     
  6. Robert

    Robert Member

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    Well I built the thing.

    Pros:

    "Construction" is easy. Connect the clips to the ends of the cell and you're done.
    It's cheap if you own a meter.
    It takes up no room. It will fit with my meter.
    Calibration once I figured it out was easy.

    Cons:

    it's dark in the darkroom. The problem is the meter is hard to read in the dark. I ended up using a flash light to read the meter.
    I'm not sure if it works. I used it to measure a clear section of an old negative and got 0.643. I guess that's fogbase?

    I'm thinking of ordering a stouffer transmission wedge [yes finally] maybe that'll help me figure out if it works.
     
  7. JHannon

    JHannon Member

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    I guess you have to eliminate the ambient light in the room from effecting the readings. I wonder if an enclosure could be made that would focus the readings on a tighter area of the negative...That is why the spotmeter method uses a magnifier and light baffle, to prevent flare from effecting the spotmeter readings.

    Let us know how it works out,
    John
     
  8. Robert

    Robert Member

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    I'm thinking of putting the meter in a box. Then I can shine a light on it. The reading is the size of the cell right now. Can't be very big.