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  1. #1

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    Lamp upgrade for Durst 138S enlarger

    I have been considering the lamp upgrade that was advertised and offered by Durst Pro/Jensen Optical at one time. Has anyone here converted their enlarger to this new 1200 watt lamp? If so what have your experiences been? Aside from that is there another way of converting a 138S to a point light source? Will the current condensors work with a point light source? What is the current URL for Jensen Optical/Durst Pro? I don't seem to be able to locate it. Thanks for your help.

  2. #2

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    What are your intended uses of a Point Light Source?

  3. #3

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    Durst

    I know that aristo has a lamp that will fit the 138 which is a 5x7 enlarger. Maybe even the VCL lamp they make will fit. Check with them. I have a V-54 lamp and it's really works well with VC paper.
    Peter

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    Jon King's Avatar
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    Is this the lamp you were looking at?

    http://www.jensen-optical.com/lampone.html

  5. #5

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    Jensen Optical is at http://jensen-optical.com/. They still offer a "lamp kit" for the 138S albeit with a price tag in excess of $800. Their web site is all but unnavigable; good luck trying to find it.

    The bulb which Durst specifies for the point source is the "PULAMP". It is a 12-volt bulb and requires the proper power supply. According to a Jensen representative I spoke with just this week, they do stock the PULAMP bulb at $75 apiece. I'm investigating other bulb possibilities.

    The correct condensers for the point source are the coated condensers which are designated by a "T" suffix. A coated mirror was also supplied with enlargers intended for point source use. I wonder how important the coated condensers are. It would be interesting to compare.

    Also see http://www.apug.org/forums/forum43/10790-durst-varipoint-bulb.html
    My Verito page

    Anyone can appreciate a fine print. But it takes a real photographer to appreciate a fine negative.

  6. #6
    Bob Carnie's Avatar
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    Don

    I am considering this upgrade as well for my enlarger, If you do go ahead could you post your thoughts on the differences and advantages that you notice, I would very interested in your experience

  7. #7

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    Quote Originally Posted by jking
    Is this the lamp you were looking at?

    http://www.jensen-optical.com/lampone.html

    Yes, that is the one. Thank you for the link.

  8. #8

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    Quote Originally Posted by Clueless
    What are your intended uses of a Point Light Source?
    Printing of my black and white negatives.

  9. #9

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    Quote Originally Posted by peters
    I know that aristo has a lamp that will fit the 138 which is a 5x7 enlarger. Maybe even the VCL lamp they make will fit. Check with them. I have a V-54 lamp and it's really works well with VC paper.
    Peter
    I am not at all interested in a diffusion light source for an enlarger. Having printed with the Durst condensors, I can see a definite improvement in sharpness and local contrast with the opal lamp/condensors.

  10. #10

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    Quote Originally Posted by wfwhitaker
    Jensen Optical is at http://jensen-optical.com/. They still offer a "lamp kit" for the 138S albeit with a price tag in excess of $800. Their web site is all but unnavigable; good luck trying to find it.

    The bulb which Durst specifies for the point source is the "PULAMP". It is a 12-volt bulb and requires the proper power supply. According to a Jensen representative I spoke with just this week, they do stock the PULAMP bulb at $75 apiece. I'm investigating other bulb possibilities.

    The correct condensers for the point source are the coated condensers which are designated by a "T" suffix. A coated mirror was also supplied with enlargers intended for point source use. I wonder how important the coated condensers are. It would be interesting to compare.

    Also see http://www.apug.org/forums/showthread.php?t=10790
    Thanks for the link to their site. I will need to check with Jens about the condensor and mirror considerations.

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