![]() ![]() ![]() Can be used from 4x5" medium format cameras through APS-C DSLR with bellows. Not aware of any other camera lenses made by any lens maker that will outresolve this lens in the magnification ranges specified above. Highly corrected for high magnification photography at 15x-30x. Recommended magnification range is 5 to 20 times life-sized. The 12.5mm Photar is for 15x to 30x magnification. An excellent lens used in macrophotography (5x-30x magnification) and can be used with large format cameras. Bellows RMS (Royal Microscopical Society) screw mount Macro/Micro lens. The Photars are very expensive but the best for achieving extremely high magnifications in macrophotography - the ultimate quality. Leica 12.5mm f/1.9 Photar Lens, Leitz Wetzlar Germany: Leitz Wetzlar Photar lenses are made for extreme close up photography and these are the best! - Photar photographic objectives are designed to be used by themselves without an eyepiece, unlike microscope objectives that are designed to be used in optical systems with two stages of magnification. Have to decide how much weight and expense is justified in a quest for optical perfection, which surprisingly has turned out to be a moving target with already amazing lenses repeatedly getting overtaken in image quality over the past decade. Leica R lenses first, then other brands, ordered by increasing focal length. Hope that the following notes are helpful to others. Sorry, didn't keep track of where each remark is quoted from, so please use an internet search engine to locate the original sources instead of quoting these mostly unattributed comments. Some personal notes accumulated over several years while trying to figure out what equipment might be of interest, summarizing what the internet thinks of various lenses and cameras to help compare. LENSES, CAMERAS, AND PHOTOGRAPHIC EQUIPMENT ![]()
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