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  1. #1
    Ken
    Ken is offline

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    Jan 2003
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    Greetings,
    I was attempting to enlarge 35 mm negatives to 11X14 with my 23C and 50mm lens. I found that I cannot focus the image when going that large. The bellows are compressed to the limit. If I crank the enlarger head down a bit I can focus the image though the image is roughly 10X12. Not as large as I would like them to be. Is there a way I can get larger images from 35 mm negatives using this enlarger? Regards.
    Ken

  2. #2

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    Ken,

    get a recessed lens mount for your enlarger.

  3. #3

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    A recessed lens board is the best solution. For occasional use of odd lenses, I've made lens boards from a couple pieces of cardboard glued together, with a hole cut for the lens. In your case, a 35mm lens from your camera kit would probably do. If the lens has a bayonet mount, the hole in the board needs to be tailored to allow the bayonets to enter and then turn a few degrees to hold the lens in place.

    I've printed a lot of 11x14 stuff with my own 23C and a 50mm lens using the standard flat lens board. Of course, some "50mm" lenses are really 48mm or even shorter. The bellows will compress more with use, I find, and a spring clothespin on the rail will keep it from extending during use.

  4. #4
    Ken
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    Is there room for the lens if I use a recessed lens board? There is the filter drawer between the lens and condensers. Making a lens board should not be too much of a problem and the clothespin is a great idea. It does tend to 'wander' out of focus when the bellows are compressed.
    I greatly appreciate your replies.
    Ken

  5. #5
    Aggie's Avatar
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  6. #6

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    There should be nothing between the recessed lens board and the negative that would interfere with the lens. I doubt that the lens would have to rise enough to touch the negative, but there's a slight chance the slider built into the lens stage above the lens would get in the way of the lens. The slider is intended to hold a dark red filter that allows projecting the image onto orthochromatic paper, such as graded paper, without exposing the paper. VC filters are meant to go in the drawer above the condenser or in a below-the-lens device.

  7. #7
    glbeas's Avatar
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    If you are *really* desperate, set you lens at the aperture you would need to use at that height, take the lens board out and put the whole thing back in upside down. Refocus and print. Do your exposure adjustments with the timer.
    Gary Beasley

  8. #8

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    You could always get a wider lens...a 35mm or so...

    Then again, you could do what I did with my Omega: remove the head and bar from the baseboard, get a cheap tabletop from the local hardware store, and add bolts to the edge. Place another table top under it, but further out...gives your enlarger a new height...


  9. #9
    glbeas's Avatar
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    Doc the wider lens would not solve his bellows problem. To do as you say you should abandon the 50 for a 75 or 90mm lens so focus can be acheived at the 11x14 and bigger sizes. Seems for some reason the enlarger was not designed to focus a 50mm lens at that height. The recessed board is actually the simplest solution.
    Gary Beasley

  10. #10
    Ken
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    I frequently enlarge 6X9 negatives and double-checked that it was set for the right format, though it was set for 35mm I have in the past forgotten to make the adjustment.
    I have tried longer focal lenghts and that only reduced the image size. It would seem that a wider angle would work but at the expense of losing some of the image.
    The recessed lens seems to be the best solution and I will give it a whirl this weekend.
    Again, I thank all of you for your input.
    Regards.
    Ken

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