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M39 enlarger lens image circle

Started Apr 28, 2018 | Questions thread
Heritage Cameras
Heritage Cameras Senior Member • Posts: 2,301
Re: M39 enlarger lens image circle

Viernes wrote:

I was thinking of using my old enlarger lens on a DIY belllows to shoot macro, but I was wondering what the image circle was. It's a M39 mount Nikon.

Thanks!

That will depend on the lens design and the bellows extension you use. Such lenses are only required to cover the diagonal of the film format they were designed for (43mm for most 50mm lenses), but can give quite a bit more.

Why not experiment with the lens you have? Cut a suitable hole in a sheet of paper or card, mount the lens in the hole and project an image onto a sheet of white paper. Move the lens backwards and forwards and you'll be able to see the size of the image circle at different distances.

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Dave, HCL

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