STM stands for Stepper Motor. In June 2012 Canon introduced a new lens motor design to address the issue of lens noise when shooting movies with an EOS DSLR camera. Called a Stepper Motor, it converts digital pulses into mechanical rotation.

Feb 6, 2025 · STM lenses rotate the lens ring with the stepping motor. As its name suggests, this motor moves in steps to ensure smooth and silent operation. On the other hand, USM lenses with ultrasonic motors deliver ultra-fast and accurate autofocus.

When you see a Canon lens with STM in the name, it means that it features Canon’s Stepper Motor technology. Canon introduced this motor design to be a quieter and smoother focus system that allows for near-silent focusing during video recording.

Inauguração da Galeria de Fotos das Ouvidoras da Mulher da JMU e dos Secretários-Gerais da Presidência do STM. 63 photos · 239 views

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Jul 23, 2018 · Nowadays, there are currently three main types of focusing motor technologies used within Canon lenses. These are STM, USM and a more conventional DC motor. Let’s take a look at the differences between these motors, so you can understand and select a …

Canon EF-S 24 mm f/2.8 STM Canon EOS 200D / Rebel SL2 / Kiss X F/8 Focal length:36 ISO:100 Shutter speed:1/320

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Nov 5, 2017 · Canon has announced two lenses for the EF-M mount used for the first time by its EOS M mirrorless camera. The first lenses will be a EF-M 22mm F2.0 STM 'pancake' prime and an EF-M 18-55mm F3.5-5.6 IS STM standard zoom lens. Both are built around a STM linear stepping motors to drive focus.

Nov 25, 2014 · Ahead of our full review, here are 51 sample images taken with the Canon EF-S 24mm f/2.8 STM lens, mounted on a Canon EOS 7D Mark II. The Canon EF-S 24mm f/2.8 STM is a moderately wide pancake prime lens for DSLRs with APS-C sized sensors, offering a 35mm equivalent focal range of 38.4mm.