In 2024, Canon officially introduced the VCM (Voice Coil Motor) autofocus system — a technology expected to revolutionize the future of AF lenses. Unlike USM or STM, which use ultrasonic vibrations or stepper motors, VCM operates based on magnetic force.
A coil is placed between two magnets; when an electric current passes through the coil, it generates a pushing or pulling force, moving the focus lens group linearly within the lens barrel.
