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joechiazza wrote:What vintage lens mounts fit on the bmcc ef mount natively without an adapter to focus infinity? Any?
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I have Nikon and Pentax K mount lens adapters that convert each lens to fit and focus to infinity on an EF camera. I have used them on my Canon 5D Mark II for years, and now use them on my BMCC EF with satisfactory results. I assume you are asking about vintage lenses that are not automatic. The adapters I have are fairly cheap ($7 to $20), and I have noted that on occasion some close focus is lost, and infinity is crossed before the lens is played to stop. To me that is symptomatic of less than exacting tolerances on the cheaper adapters, though it seems to vary from lens to lens, so other factors may be at work.