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Natural Science Forum / Physics / Optics / April 2005Long Working Distance macor/microscope lens
Need a macro/microscope lens with widest possible working distance. There has been the Katoptaron LDM-1 and the MRM-1 by Infinity Optical and the Questar M1. Any ideas, offers, sources, documents most welcome!! Thanks Klaus D Schmitt kds315 AT yahoo DOT com > Need a macro/microscope lens with widest possible working distance. > There has been the Katoptaron LDM-1 and the MRM-1 by Infinity Optical > and the Questar M1. What kind of working distance, NA, magnification are you talking about? "widest possible" is not a spec. Also you are enumerating a number of possibilities, none of them apparently satisfy you ? Price range, too, the Questar is quite expensive. The Edmund Catalog has a good selection. I should have been more precise: The lens I am looking for is a macroscopic lens for SLR and 16mm Film applications, not a microscope lens. The intended magnification range is between 0.1x and max. 3x, the lens has to have a built in aperture (iris) to control Depth of Field (DOF). All the types I mentioned have this ability Thanks, Klaus > > Need a macro/microscope lens with widest possible working distance. > > There has been the Katoptaron LDM-1 and the MRM-1 by Infinity Optical [quoted text clipped - 10 lines] > > The Edmund Catalog has a good selection. There is a much simpler way for low levels of magnification: use a 3x teleconverter on a macro lense and you should be able to get a working distance of several feet. I once took a closeup of a water mocassin using a home made 3x converter on a 200mm lense from 10 feet away - needed the tripod, that's for sure. Lyle >I should have been more precise: > [quoted text clipped - 24 lines] >> >> The Edmund Catalog has a good selection. Mitutoyo make some high perfomance long working distance microscope objectives. Some of them are listed in the Edmund's catalog Thanks to all - I meanwhile found what I was looking for! Best Klaus > Need a macro/microscope lens with widest possible working distance. > There has been the Katoptaron LDM-1 and the MRM-1 by Infinity Optical [quoted text clipped - 7 lines] > > kds315 AT yahoo DOT com |
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