What is stm lenses?

STM (Stepping Motor) lenses are a type of autofocus motor technology used in Canon lenses. STM lenses are known for their smooth and quiet autofocus operation, making them ideal for shooting video. STM lenses feature a stepping motor mechanism that allows for precise and silent focusing, reducing unwanted noise in video recordings.

STM lenses are commonly used for shooting video, vlogging, and live streaming due to their smooth and quiet autofocus performance. They are also popular among photographers for capturing still images, especially in situations where a quiet autofocus operation is desired.

Some of the key benefits of STM lenses include fast and accurate autofocus, reduced noise during focusing, and compatibility with Canon's Dual Pixel CMOS AF technology for smooth and responsive focusing during video recording.

Overall, STM lenses are a popular choice for both photographers and videographers looking for high-quality, quiet autofocus performance in their lenses.