The RF 24-240mm F4-6.3 IS USM uses Canon's NANO USM system which combines conventional ring USM AF, and features a diminutive chip-shaped ultrasonic motor that's engineered to help deliver high-speed, smooth, precise and near-silent operation, plus full time manual focus (when using One-shot AF).
The Canon RF 70-200mm F4 L IS USM is a compact zoom with quick focus and exquisite optics. Pros may still want a F2.8 zoom, but this is more than enough lens for most photographers. MSRP $1,799.00
John Riley reviews the new Canon RF 24-105mm f/4L IS USM, the standard kit lens for the EOS R. It is a constant f/4 optic, and comprises 18 elements in 14 groups. It has a diaphragm of 9 blades.
Canon won't sell a lot of RF 24-105mm F4-7.1 IS STM lenses to pro photographers, and enthusiasts who crave glass with wide f-stops and edge-to-edge optical perfection may turn their noses.
Canon RF 24-105mm F4L IS USM. Sony FE 24-105mm F4 G OSS. move left: move right: move left: move right $1,299.00. Check prices. Sep 5, 2018
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canon rf 24 105mm f4 7.1 review
