Canon's compact EF-M macro with built-in LED ring light — 45mm equiv at f/3.5 with IS and unique illumination.
The Canon EF-M 28mm f/3.5 Macro IS STM was released in 2015 as a compact macro prime for Canon EOS M APS-C bodies, achieving 1:1 life-size magnification at 0.097m minimum focus distance. A Super Macro mode extends to 1.2x. Hybrid IS provides 3.5 stops of compensation. At 130g and 43mm filter thread it is very compact. Built-in macro LED ring light. Seven rounded aperture blades.
The optical design uses 11 elements in 10 groups including 1 UD and 2 aspherical elements. Seven rounded aperture blades. The 43mm filter thread is very compact. At 130g the lens is very lightweight. Minimum focus distance of 0.097m (normal) / 0.093m (Super Macro). 1:1 magnification (normal); 1.2x (Super Macro mode). Hybrid IS 3.5 stops. STM for quiet AF. Built-in macro LED ring light.
The 1:1 magnification at under 10cm subject distance with a built-in LED ring light is the EF-M 28mm's distinctive capability: the ring light provides controllable illumination at the extreme close working distance where standard front-mounted flash would be blocked by the lens barrel. The Hybrid IS combines angular and shift correction specifically effective at macro distances where shift-type camera movement dominates.
On the used market the Canon EF-M 28mm f/3.5 Macro IS STM is affordable as a compact APS-C macro prime. Condition checks: Hybrid IS engagement, STM AF response, LED ring light function, 43mm front element for marks. Compatible with all Canon EOS M EF-M mount bodies.