Canon has unveiled the RF 28-70mm F2.8 IS STM, a light, large-aperture standard zoom for its EOS R full-frame mirrorless cameras. Designed to be a step up from kit zooms, it is a general-purpose zoom for subjects including portraits, street, and travel.
The lens’s main selling point is its bright aperture in a relatively small size. It measures 92.2mm in length and 76.5mm in diameter, and weighs in at 490g. This means it’s similar in size to the Canon RF 24-105mm F4-7.1 IS STM, and a little over half the weight of Canon’s pro-spec RF 24-70mm F2.8L IS USM. With a retracting barrel design, the lens is also more portable than similar lenses from other makers.
Optically, it features 15 elements in 12 groups, with 2 UD glass and 2…