A Completely Idiotic Question

Discussion in 'Enlarging' started by yeknom02, Jan 23, 2011.

  1. yeknom02

    yeknom02 Member

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    I have a Beseler 23 enlarger with two lens boards for Beslar 50mm and Beslar 75 mm lenses. I'm thinking about upgrading one or both to something fancy, like a Rodenstock or Schneider lens.

    Can I use the same boards for the new lens(es)?
     
  2. 23mjm

    23mjm Member

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    Yes normally
     
  3. MattKing

    MattKing Subscriber

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    Most likely, yes.

    Some lenses require different boards, because their thread sizes are different.

    And some longer or shorter lenses can, for some enlargers, require cones or recessed lensboards.

    But if your current lenses have 39mm threads, and you are looking to replace them with upgraded 50mm and 80mm lenses, many if not most of the better versions will use the same boards and retaining rings or threads.

    You probably won't be able to find an upgraded 75mm - for some reason most of those are of the entry level variety.

    You may want to consider something longer, like 90mm, if you think you may shoot 6x7. 90mm will be fine for most 6x6 or 6x4.5 negatives, especially if you have the long column version of your enlarger (longer lenses mean smaller enlargements with the same height).

    By the way, there is nothing idiotic about the question - it is a good one to ask, if you don't know the answer.

    One final practical point - be sure that you can actually get your current lenses off the boards they are installed on. If they have been there for a long time, they can sometimes really resist change :smile:.

    Have fun!
     
  4. Tim Gray

    Tim Gray Member

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    Yes except for a few oddball lenses. You want ones with 39mm threads, sometimes called LTM or Leica mount.

    Ditto on the 80 or 90mm lenses. You probably wont find many 75s that are a step up from what you got. I actually have a 75 that was acquired for a couple bucks because I needed the Beseler lens board that was attached to it :D
     
  5. yeknom02

    yeknom02 Member

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    Thanks for all the advice! I had planned on getting an 80mm lens anyway, since I shoot 6x6. I don't really think I'll ever shoot 6x7, since I had borrowed a Mamiya RB and decided I didn't like the weight of the camera or the extra space of the larger negative.
     
  6. 23mjm

    23mjm Member

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    An 80mm Nikon covers 6X7 fine as do a lot of others.
     
  7. yeknom02

    yeknom02 Member

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    Speaking of idiotic questions about enlarger lenses, I noticed that one of my Beseler lens boards has a small, clear plastic cylinder with a 45-degree cut at the end. Does anyone have any idea what this is, and what it's for?
     
  8. MattKing

    MattKing Subscriber

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    When positioned correctly, the cylinder illuminates the f/stop setting on some enlarging lenses.
     
  9. yeknom02

    yeknom02 Member

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    Wow, thanks, Matt. I'm going to see if I can adjust this. I was just thinking of how cool it would be to see my f/stops when I'm printing!
     
  10. MattKing

    MattKing Subscriber

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    If you are looking for new lenses, many of the modern lenses feature illuminated f/stops.

    I consider them a real plus.
     
  11. tkamiya

    tkamiya Member

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    I have an old Schneider (not for sale) that has 25mm thread. It has to have an adapter that has a 25mm inner thread and 39mm outer thread. Not a big deal but if you are looking at something like this, you would want to be aware and purchase an appropriate adapter or a lensboard.

    As to f/ stop illuminations, I usually feel the click and count from the widest stop. Not a big deal if it doesn't have one. (many older but otherwise just fine lenses do not have illuminations)
     
  12. yeknom02

    yeknom02 Member

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    I just got a 50mm Nikkor 2.8 on eBay. I have heard good things about it and will let you guys know if I have any trouble with it.