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Article on CC Harrison's 1857 Orthoscope Lens
CCHarrison
4-Nov-2008, 13:41
please see
http://www.antiquecameras.net/1857ccharrisonlens.html
thanks
Dan
seawolf66
4-Nov-2008, 19:41
Thanks dan:
Paul Fitzgerald
4-Nov-2008, 19:55
Dan,
Thanks for the link, I did notice the curved slots in the aperture ring, the basis of equally spaced aperture markings still used today. Just abit ahead of his time.
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