I'm in the contemplation phase of creating the subject lens. I would purchase an achromatic doublet, from either Edmund or a surplus house, and have SKGrimes mount it into a Copal #3. To go a bit further, I'm thinking of getting two lenses, one of 150mm focal length and the other of 300mm, for 4x5 and 8x10 respectively-for use in the same shutter. I know there will be some (or a lot of) vignetting when shot at or near wide-open. SKGrimes has indicated that it might be better to mount the lens behind the shutter.
Has anyone attempted such a project? What were the results?
I'm also interested in opinions and suggestions. Thanks.
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