The Dictionary Of Photography

A True Historic Record Of The Art & Practice Of Photography 100 Years Ago.

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Anamorphoscope                                    Anamorphote Lens
Anamorphoscope, Anamorphosis in the sense of
back, andthe act of putting into shape). M. Linde's
Photoanamorphoscope is a device by which a revolving picture is photographed on a revolving plate, the directions and speeds being different, but in order to secure definition only a narrow radial strip is exposed at one time. The result in no way suggests the original, and appears a confusion of whirl-like markings, but when viewed in an apparatus corresponding to that employed in its production (anamorphoscope) the original is reconstituted to the eye. A general account of various Photo-anamorphoscopes is to be found in The Amateur Pho-tographer for November 23rd, 1900, p. 406. Photographs for the common form of anamorphoscope, in which a cylindrical mirror stands on a much-distorted and often unrecognisable picture, may be obtained in a very simple manner. The cylin-drical mirror being set upright on a sheet of development paper, the lens of an enlarging lantern, in which the original negative is set, is made to look nearly horizontally, but a little downwards, just as the eye would look in viewing the resulting photograph with the aid of the mirror. Clearly a cylindrical mirror could be set in a camera in such relation to the lens that distorted negatives would be produced direct from nature. A cylindrical mirror, frominches in diameter and 3 inches high,
will be found suitable for whole plate size. A drawing of that form of anamorphoscope in which a cylindrical mirror is used will be found in Brewster's "Optics," London, 1831, p. 320.
Another system of anamorphosis to which photography may be applied, is that in which a polyhedral lens is used. This, being combined with a suitable photographic objective, the sub-ject becomes broken up into small confused patches; but on viewing the result with the aid of the same optical system, pro-perly adjusted, all again becomes order. The intermediate spaces on the sheet, which do not show in the reconstitution, may be filled up as fancy, or a desire to obscure the original, may dictate. There are many articles on Anamorphosis in the older books, and a short article on this subject on p. 667 of the first volume of "The National Cyclopaedia" (London, 1847) maY be mentioned.
Anamorphote Lens. A lens which contains a cylindrical ele-ment, and therefore distorts like a cylindrical mirror. (See Lens.)