It also provides a shallow depth of field, allowing you to blur the background to focus attention on the subject. Has rounded aperture blades. Canon EF 24-105mm F4L II USM. Canon RF 24-105mm f/4-7.1 IS STM. Similar to the number of aperture blades, rounded blades affect the way the light gets through to the sensor. Compare Canon RF 24-105mm f 4-7.1 IS STM Lens vs Sigma 24-105mm f 4 DG OS HSM Art Lens Canon EF vs Canon RF 24-105mm f 4 L IS USM Lens Press ‎ ↵ Enter ‎ for Accessibility for blind people who use screen readers Compare Canon RF 24-105mm f 4 L IS USM Lens vs Canon RF 100mm f 2.8 L Macro IS USM Lens vs Canon RF 35mm f 1.8 Macro IS STM Lens Compare Canon RF 24-105mm f 4-7.1 IS STM Lens vs Canon RF 24-105mm f 4 L IS USM Lens vs Canon RF 24-70mm f 2.8 L IS USM Lens vs Nikon NIKKOR Z 24-70mm f 4 S Lens Press ‎ ↵ Enter ‎ for Accessibility for blind people who use screen readers The Canon RF 85mm f/2 Macro IS STM is a nice small lens, weighing only 500 grams. It measures 3.1 x 3.6 inches and balances very well when fitted on a Canon mirrorless camera. The low weight is The EF-S 18-135mm f/3.5-5.6 IS USM was the first of Canon’s lenses to contain Nano USM and is especially useful when the smooth focus is a must for natural-looking focus transitions. Nano USM gives superb control, allowing for smooth tracking while focusing on your subject as it moves away or towards the camera. Canon RF 85mm F1.2 L USM Lens, Black (Image from Amazon) Canon STM Autofocusing in-Detail. The Stepping Motor is becoming widely used, especially in budget Canon lenses. When looking at STM vs USM, STM has generally been considered the better option for video. This is because it provides smoother focusing that is less jarring than USM. Has a metal mount. Canon EF-S 18-135mm f/3.5-5.6 IS USM. Canon RF 24-105mm f/4L IS USM. A metal mount is generally superior to a plastic mount as it is more durable. weight. 515g. 700g. We consider a lower weight better because lighter devices are more comfortable to carry. 3csxnr.