Modern magic lanterns; a guide to the management of the optical lantern (1900)

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[antern * = [enses Highest Quality only. (PATENT). Ttese lenses are specially constructed for use with the Optical Lantern and are not intended for Photo- graphic purposes. They will be found to give a perfectly achromatic image, combined with an absolutely flat field, and great bril- liancy of definition. The enlargements upon the Screen are perfectly true to the original, free from all distortion, and well de- fined throughout, whilst the equality of illumination obtained is a remarkable feature. For use with first-class Objectiyes. Made to formulae calculated for the con- centration of the greatest possible amount of light, and carefully corrected. The glass employed is the finest obtainable, and free from any striae or similar defects. It is specially annealed, and—with ordinary care—mii not crack. For particulars of CINEM/VTOGRAPH LENSES and PHOTO- GRAPHIC LENSES and CAMERAS, see Illustrated Catalogue, free on application. J. H. DALLMEYER, Ltd., OPTICAL MANUFACTORY, 25, NEWMAN ST., LONDON. W.