Help: Seiko shutter hole diameter for lensboard fujinon 250 f/6.7

I can't find any information on the diameter hole I need drilled to mount this lens on a board. It is an older Seiko shutter marked LS24 for a Fujinon 250 f/6.7; more specifically this lens for reference:

http://www.ebay.com/itm/110907896470...84.m1497.l2649

I would appreciate any help on this so I can use it asap!

Have you applied a ruler to the threaded part of the shutter?

I'm not being snarky... only trying to sincerely help.

No Brian, I don't have this lens yet, it is on the way from Japan. I wanted to get the board done asap, so I was hoping someone had one and could help.

Thanks for the idea though.

Quote:

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Originally Posted by David Brunell

No Brian, I don't have this lens yet, it is on the way from Japan. I wanted to get the board done asap, so I was hoping someone had one and could help.

Thanks for the idea though.

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Measure it and update the "lensboard hole size" document on the main page :)

Quote:

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Originally Posted by ic-racer

Measure it and update the "lensboard hole size" document on the main page :)

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Will do.

Quote:

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Originally Posted by BrianShaw

Have you applied a ruler to the threaded part of the shutter?

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On shutters that use a retaining ring, the mounting hole diameter is significantly larger
than the major diameter of the thread.

The retaining ring has a shoulder that protrudes into the hole.

- Leigh

Seiko 0 shutters are the same diameter as Copal 0, so I would think the 250 6.7 is in a Seiko 1 and is the same diameter as a Copal 1 .

Quote:

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Originally Posted by Neal Chaves

Seiko 0 shutters are the same diameter as Copal 0, so I would think the 250 6.7 is in a Seiko 1 and is the same diameter as a Copal 1 .

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Not all of them! The shutter for the Fuji 250/6.7 needs a slightly larger hole than a Copal 1. I don't have this lens now, so can't give any exact figures.

Kumar

I have a Linhof type board drilled for a Seiko.....it wasn't the same as my Copal spec boards...long ago sold the lens but I still have the board.. pm me!

Just a bump. I recently got a Fujinon WS 250 6.7 from the bay. I'm curious what size of the hole needed for lensboard since the shutter is Seiko 1 i think. Anyone?

Thank you!