{"id":103,"date":"2021-05-08T01:21:59","date_gmt":"2021-05-08T00:21:59","guid":{"rendered":"http:\/\/iso3200.org\/blog\/?page_id=103"},"modified":"2026-04-09T16:07:07","modified_gmt":"2026-04-09T15:07:07","slug":"canon-ef-m-mount-lenses","status":"publish","type":"page","link":"https:\/\/iso3200.org\/blog\/references\/canon-ef-m-mount-lenses\/","title":{"rendered":"Canon EF-M mount lenses"},"content":{"rendered":"\n

The EF-M mount is a lens mount designed in 2012 by Canon for digital mirrorless cameras with APS-C sensors. It is a bayonet mount with three lugs, made exclusively for the APS-C format (1.6\u00d7 crop factor), with a focal flange distance of 18mm and a throat diameter of 47mm. EF\u200d-\u200dM mount inherited EF-mount digital-only communication, there are no mechanical linkages between lens and camera, and it is fully compatible with EF and EF\u200d-\u200dS mount variants, meaning simple adapters with pass-through connections are sufficient to retain all adapted lens functions.<\/p>\n\n\n\n

EF-M lenses cannot be used on RF-S cameras due to a shorter focal flange distance.<\/p>\n\n\n\n

Note<\/strong><\/span>:<\/span><\/strong><\/em> this reference currently counts only autofocus lenses.<\/p>\n\n\n\n

<\/div>\n\n\n\n
<\/path> <\/path> <\/path> <\/g> <\/g> <\/svg><\/div>
\n

Canon EF-M system was discontinued in October 2023.<\/p>\n<\/div><\/div><\/div>\n\n\n\n

Jump to: Canon EF-M lenses<\/strong><\/a>, third-party EF-M lenses<\/strong><\/a>, adapters<\/a><\/strong>.<\/p>\n\n\n\n

<\/div>\n\n\n\n
\n

Canon EF-M lenses<\/h2>\n\n\n\n