jc_braconi Posted January 25, 2011 Share #1 Posted January 25, 2011 Advertisement (gone after registration) As eyesight correction lens have been available at least from 1933, appropriate fittings have been brought in, to suit new cameras and reflex housing. Lenses to correct for astigmatim have followed a couple of year those for spherical correction only. In 1973 Leitz would only supply a mount for M cameras (code 042 253 008) and the customer's optician supplied the lens. In 1977 there was a further change of policy and individual correction lenses were supplied for current M cameras. For the use of the Leica dealers a diopter selector disc (-5 to +4 diopters) was provided in 1955. For illustration : Link to post Share on other sites More sharing options...
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