How big is a #5 shutter hole?

[Dave Aharonian]

I've been curious about some older lenses I've been seeing for sale and a number of them are in a #5 shutter. Can anyone tell me the size of the hole needed to mount such a beast, and will this fit within a sinar size lensboard? I'm shooting with a Shen-Hao 8x10. Thanks for any info!

Dave

[David Karp]

http://www.largeformatphotography.info/lensboard_hole_sizes.html

[Ole Tjugen]

Just look at the thread size for Compound #5 in the link in my signature. The big Compounds come with flanges, so add about 2mm diameter to the hole.

[Dave Aharonian]

Thanks guys - this is just what I needed!