The best Canon EF-S telephoto zoom, combining sharp optics with quiet STM autofocus.
The Canon EF-S 55-250mm f/4-5.6 IS STM is the definitive Canon APS-C telephoto zoom, launched in 2013. Adding the quiet STM motor to the already-good IS II optics, it became the telephoto lens Canon APS-C shooters should buy. It is dramatically better than the EF 75-300mm III in every measurable way.
Optical quality is excellent for the price with sharp results across the range, noticeably better than the EF 75-300mm III. IS provides approximately 3.5 stops. The STM motor is smooth and near-silent, making it the first Canon APS-C telephoto suitable for video with Dual Pixel AF. Build is lightweight plastic at 375g.
Canon EF-S mount only, 58mm filter thread. This is the version to buy among all EF-S 55-250mm variants. The original IS and IS II versions have noisier DC motors. The RF-S 55-210mm f/5-7.1 IS STM is the mirrorless equivalent but with a slower aperture.
Outstanding value used. Check IS operation and STM motor for smooth quiet operation. At typical used prices this is one of the best telephoto zoom values available from any manufacturer. Highly recommended for any Canon APS-C shooter.