canon ef camera reviews p canon ef 1973 camera reviews the ef is the only camera in the manual focus canon line of the 1960s and 1970s which includes the ftb the f 1 and the ft that can be used with common 1 5 volt batteries without modification to the internal electronics like all pre 1987 canon slr s the ef accepted canon fd mount lenses p p canon ef camera wikipedia the canon ef is a manual focus 35mm single lens reflex camera produced by canon between 1973 and 1978 it was compatible with canon s fd mount lenses the ef was built as an electronic version of canon s top of the line f 1 camera canon eos m6 mark ii review our favorite canon mirrorless camera 25 11 2019 a the canon eos m6 ii is an enthusiast targeted 32 5mp aps c mirrorless camera built around the company s ef m mount in many respects it s a more compact mirrorless variant of the eos 90d dslr that was announced simultaneously canon ef m 32mm f1 4 review digital photography review 19 02 2019 a