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  1. #1
    Gerry M's Avatar
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    What have I got here?

    This is an older (I think) Beseler 23C2 head that was with some other enlarger gear that I bought. My question is concerning the sliding device on the side of the housing that holds the lens board. It slides left to right, and it has what looks like a piece of plexiglass that opens or closes the light source. I have two other 23C2's that don't have this device. So, the big questions is; what is this mechanism for?
    Thanks,
    Gerry
    Attached Thumbnails Attached Thumbnails view #1 web.jpg   view #2 web.jpg   view #3 web.jpg  

  2. #2
    Rick A's Avatar
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    Thats for a red filter. Peel the covering off and it should be red plexi.
    Rick A
    Argentum aevum

  3. #3
    Gerry M's Avatar
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    Rick,
    So, that takes the place of the lower mounted, swinging filter holder on the newer models?
    Also, you can see that there is a hole bored in the lower left corner of the plexiglass. What would be the purpose of that?

  4. #4

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    I have the same thing on my Beseler 4x5 enlarger and also was wondering what its for? At first i thought it was to focus while the paper was in but it has a hole in it. My enlarger has a drawer for 6in filters.

  5. #5
    Rick A's Avatar
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    I have a feeling that is the wrong red filter for that negative stage. That looks like the plexi for a Printmaker or the 67, which use a swing away filter.
    Rick A
    Argentum aevum

  6. #6

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    That makes sense that it would be for a swinging holder but why would they include the plexi one with the hole and not a solid one for the enlarger.

  7. #7
    Gerry M's Avatar
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    Here are some more views of the device.

    It almost looks as if this is an after market item. When it is pushed in, it closes off the light source, or with the paper covering removed would be a filter. You can see that the protective paper cover has never been removed. I think the plexiglass is red, but have not peeled the paper back.
    The knob design on the tray doesn't match any other knobs on the enlarger.
    I have two other, newer 23C2 heads and the lower bellows on these are glued down. On this older head, it is screwed to the casting that holds the lens board. It has the regular compartment for ~5.5"X5.5" filters, but no swinging tray.
    The last image is of a newer housing with the swing away filter tray.
    Attached Thumbnails Attached Thumbnails view #4 web.jpg   view #5 web.jpg   view #6.jpg   view #7.jpg  

  8. #8
    Rick A's Avatar
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    Like I said, there shouldn't be a hole in the plexi, it rests in the tray. The handle slides it across the light path or out of the way. I'll get photos of one of mine tomorrow and post them here.
    Rick A
    Argentum aevum

  9. #9

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    Does the hole align with a light pipe to illuminate the f stop?
    Heavily sedated for your protection.

  10. #10
    ic-racer's Avatar
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    Good thought. The green numbers on some lenses don't do so well with red light

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