Marketed	September 2024
Original Price	Open price
Lens Construction (group)	12
Lens Construction (element)	15
No. of Diaphragm Blades	9
Minimum Aperture	22
Closest Focusing Distance (m)	0.27 at 28mm with AF 0.24 at 28mm with MF
Maximum Magnification (x)	0.24 at 70mm with AF or MF
Filter Diameter (mm)	67
Maximum Diameter x Length (mm)	Approx. 76.5 x 92.2 (Retracted) , 112.4 (Wide) , 138.9 (Tele)
Weight (g)	Approx.495

This single lens will allow users to shoot in a wide variety of scenarios since it covers the standard zoom range of 28 mm to 70 mm focal length, which is frequently used in both still and moving image shooting. Thanks to its f/2.8 aperture, the RF28-70 mm F2.8 IS STM offers comfortable hand-held shooting and natural, beautiful bokeh expression over a wide range of focal lengths across the entire zoom range. In this way, it helps to meet the diverse shooting needs of photographers who want to casually capture snapshots, portraits, and landscapes, as well as those of video creators who want to emphasize detailed expression in their visual works to an even greater extent.

Its compact and lightweight figure, measuring approximately 92.2 mm in overall length and weighting about 495 g, was achieved through the miniaturization of the IS (image stabilization mechanism) unit and the adoption of a collapsible structure.

In addition, it features an optimal optical design that combines 15 lenses in 12 groups, with a UD lens^*1 for the L lens situated in the very front. This reduces aberrations that cause image quality degradation and allows the lens to achieve high image quality close to that of an L lens across the entire captured image. By adding a magnetic sensor to read the rotation speed of the motor to the lead-screw type STM (stepping motor) used in the lens, Canon has enabled advanced feedback control as well as quieter and smoother operation of the high-speed, high-precision AF function.

Additionally, the lens is equipped with 5.5 steps^*2 of image stabilization through the in-lens optical image stabilization mechanism. When attached to an EOS R series camera^*3 equipped with an in-body image stabilization mechanism, the camera performs better image stabilization thanks to the cooperative control of the lens and camera. For example, when attached to the EOS R1 (scheduled to be released in November 2024), the lens produces an image stabilization effect of 7.5 steps5 (center) and 7.0 steps^*4 (outer), based on CIPA2024 standards, to enable comfortable shooting.

*1 Lenses made of UD（Ultra-low Dispersion）glass
*2 CIPA2024 standard, 5.5 steps (center), focal length 70 mm, yaw/pitch direction, when attached to EOS R8 (released in April 2023)
*3 For camera models with cooperative control function, please refer to the official Canon Official website.
*4 Raw/Pitch/Roll direction, when attached to EOS R1 with focal length of 70 mm