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Filter sizes for Canon EF lenses

Glass 'Protector' filter made by Canon on a white background.

Canon filter sizes are difficult to find, at least in a list form. At one time, all manufacturers went to the trouble to do so with printed brochures but now, with the internet, not so much.

With the move to EOS R cameras and the highly capable and versatile EF-RF adaptors, the older EF lenses remain hugely popular. Indeed, with focusing accuracy as good if not better than the older DSLRs, especially when focused off-centre, EF lenses have seen a new lease of life.

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