enlarger lens without click stops

Discussion in 'Darkroom Developing and Printing' started by sreenath, Feb 25, 2005.

  1. sreenath

    sreenath Guest

    Hi All,

    I have been using Fujinon EP 50mm/3.5 for printing, and the lens is
    really very good. But one problem is it does not have click stops.

    I have on several occassions switched on the enlarger before stopping
    the lens down to working aperture. And I am never sure if I have set
    the aperture correctly. I cant see the aperture setting in the safe
    light.

    I am sure lot of experienced printers have used lenses without click
    stops. I would really appreciate any tips for using such lenses.

    thanks for any tips,
    Sreenath
     
    sreenath, Feb 25, 2005
    #1
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  2. sreenath

    jo.sto Guest

    Many enlarger lenses have click stops that can be disengaged. Maybe
    yours has click stops that you could engage by shifting the aperture
    ring towards or away from the front of the lens, or by shifting a
    slider on the barrel of the lens.
     
    jo.sto, Feb 25, 2005
    #2
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  3. sreenath

    Peter Irwin Guest

    If you always use one aperture, you can probably get good
    at stopping it down in the dark by feel. If your lens goes
    from f/3.5 to f/16 and you want f/8 or f/11, it is probably
    easiest to turn the dial all the way and then back up to your
    standard printing aperture.

    Another thing is to get a darkroom flashlight. I use a mini
    maglight with a piece of #25 gel filter in front of the lens.
    It is very handy for seeing into bits of the darkroom that
    the main safelights don't illuminate well.

    Peter.
     
    Peter Irwin, Feb 25, 2005
    #3
  4. Perhaps not. I've never seen an enlarging lens that didn't have them,
    including a Fujinon EP I've used. Perhaps your lens is simply
    defective?
     
    Scott Schuckert, Feb 25, 2005
    #4
  5. I use a lens that when pushed UP engages click stops, or when pulled DOWN
    disengages them. Since I often print at about 1/2 scale, but may open the
    lens up between sequential prints to make adjustments, I find the clicks are
    essential in assuring exact repetition of exposure. I have never used the
    non-click mode.
     
    Pieter Litchfield, Feb 25, 2005
    #5
  6. It probably does have click-stops. They are most likely disengaged. I
    think with Fujinon enlarger lenses, you pull down the aperture ring to
    engage or disengage f-stop detents. Can't remember exactly.
    Here's how I eliminate that happening: I used a grain magnifier, and
    always do my final focus check AFTER stopping the lens down to the
    printing aperture. To view the f-stop, I hold the palm of my hand in
    the light stream under the lens and reflect some of it back onto the
    f-stop markings, then stop down. You could also use a small darkroom
    flashlight instead. If you follow this procedure, your prints will
    always be in focus (some lenses, even good ones, focus shift when
    stopping down), and you'll never ruin another sheet of paper by
    forgetting to stop down. You will have to get a grain magnifier, but
    you should have been using one all along.
     
    Stefan Patric, Feb 25, 2005
    #6
  7. On my Schneider Symmar S 150mm f/5.6 (relatively new), the clickstops can
    be engaged or disengaged with a slider on the side of the barrel. There is
    also a dimly-lit aperture scale visible when the enlarger light is on.

    When printing B&W, I count clicks (1/2 stop clicks with this lens) to get
    the aperture I want. When printing color, I disengage the clicks and set
    the color analyzer to all colors and adjust the aperture to make the meter
    read zero.
     
    Jean-David Beyer, Feb 26, 2005
    #7
  8. sreenath

    sreenath Guest

    Thanks for all the helpful tips. Thanks for those who sent emails.

    After one of the replies suggested that this particular lens indeed had
    click stops, I opened the lens and removed a cir-clip. The lens has
    been designed with click stops, and someone had removed the tiny spring
    and the ball that provides the click-stop effect.

    I had bought quite a few of these lenses on eBay, and the click stop
    mechanism has been removed in ALL of them.

    As one reply suggested, perhaps these lenses were used with some
    enlarging meter or color analyser that could not work easily with
    clock stops.

    So one more think to worry when buying stuff on eBay!

    thanks,
    Sreenath
     
    sreenath, Feb 28, 2005
    #8
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