The Canon EF-S 18-135mm f/3.5-5.6 IS USM lens introduced Nano USM technology, delivering high AF performance in an even more compact size than previous technologies.
A peek inside the Nano USM technology in the EF-S 18-135mm f/3.5-5.6 IS USM lens.
LENSES
Ring-type USM motors have a relatively simple construction and arrangement of the rotor and stator. The stator is the toothed ring at the rear.
Ring-type USM motors are designed to fit within the barrel of a lens.
The Canon EF-S 18-135mm f/3.5-5.6 IS USM lens introduced Nano USM technology, delivering high AF performance in an even more compact size than previous technologies.
A peek inside the Nano USM technology in the EF-S 18-135mm f/3.5-5.6 IS USM lens.
The STM system uses a precision stepper motor, which moves in fine increments one step at a time.
Larger STM lenses incorporate a lead-screw type STM system, which is bulkier than the gear type STM units used in more compact lenses but faster and quieter in operation.
The Canon RF 24-105mm F4L IS USM lens has a Nano USM motor (labelled Nano USM) controlled by a microprocessor (labelled Lens Microprocessor), which communicates at high speed with the Dual Pixel CMOS AF system in the sensor of EOS R System cameras and the camera's processor (labelled Image Processor), delivering super-fast autofocus performance.
LENSES
Read about advanced tech in Canon lenses to reduce aberrations and improve image quality, including fluorite, aspherical, BR and UD (ultra-low dispersion) lenses.
LENSES
Multi-layer Diffractive Optical Element is a technology that combines the characteristics of aspherical and fluorite elements. Find out more.
LENSES
Find out how the tech in Canon's IS lenses works to keep images sharp despite camera shake, which IS mode to use for best results, and more.
ARTICLE
Is full-frame mirrorless right for you? Canon's Mike Burnhill answers 10 frequently asked questions about EOS R, EOS RP and RF lenses.