2Oceans Posted February 17, 2008 Share Posted February 17, 2008 I would like to mount a 77mm close up diopter in a thin filter ring. Does anyone know where they can be purchased without glass? Link to comment Share on other sites More sharing options...
alex_lofquist Posted February 17, 2008 Share Posted February 17, 2008 The very nature of a quality (achromat) close-up diopter is that it cannot be thin. If you are concerned about vignetting, consider a larger diameter, and a step down adapter. If you want a 77mm mount only, check your local camera store's junk drawer. NOTE: "Diopter" achromat lenses are not usually configured for wide angle lenses. Link to comment Share on other sites More sharing options...
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