Beseler Lens Boards - Not All The Same?

marcmarc

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Jan 22, 2009

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• Feb 18, 2010

• #1

Hi Everyone,

I took a look at the owners manual for my Beseler 23CII and noticed that there are different numbers for different boards based on focal length. I've been using a 100mm lens for my 6x7 negs in both a Besler 4x5 enlarger as well as the 23C. However, I also shoot 135 and have a 50mm lens. Can't I use the same board for my 50mm as I have the 100mm in? It's the only board I have right now. Thanks for replies.

 

Jon Shiu

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• Feb 18, 2010

• #2

If it is a flat board, it will probably work fine, unless you need to make larger than about 11x14 enlargements. That would require a slightly recessed board so the lens can get closer to the negative in order to focus.

Jon

 

rmann

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Mar 14, 2004

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• Feb 19, 2010

• #3

Larger lens on the 4x5 may need a different board so the rear element can clear the metal that is part of the turret attachment - I think it starts to be a concern with 180mm designs and up.

 

ricksplace

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• Feb 19, 2010

• #4

I use a beseler 23C and a 45MX. The lensboards are interchangeable between the two. As far as I know, the boards are all the same, the only difference being the size of the hole in the board. (except for the extended or recessed boards)

 

mikebarger

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• Feb 19, 2010

• #5

It may also indicate a different length of the light tube.

Mike

 

fotch

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• Feb 19, 2010

• #6

rmann said:

Larger lens on the 4x5 may need a different board so the rear element can clear the metal that is part of the turret attachment - I think it starts to be a concern with 180mm designs and up.

Click to expand...

I have never seen a turret attachment that uses the 4x4 board. The only turret attachment that I am aware of fits only the MXT and the lens screw right into it.

Is there another one?

 

rmann

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• Feb 19, 2010

• #7

fotch said:

I have never seen a turret attachment that uses the 4x4 board. The only turret attachment that I am aware of fits only the MXT and the lens screw right into it.

Is there another one?

Click to expand...

Yes, you are correct - I was thinking of the VXL.