The EF-S 55-250mm f/4-5.6 IS STM features stepping motor (STM) technology for smooth, quiet continuous focusing when capturing video with your EOS and fast, accurate AF when shooting photos. STM focusing is so quiet that it’s not picked up by the camera’s microphone, leaving your video soundtracks free of unwanted distractions.
Delivering superb image quality
The EF-S 55-250mm f/4-5.6 IS STM uses a UD (Ultra-low Dispersion) glass element and Super Spectra lens coatings to deliver crisp, sharp, high-contrast images throughout the zoom range. A seven-bladed aperture diaphragm increases the quality of out-of-focus areas, so your subject stands out against a soft, blurred background.