RF Lenses


RF24-240mm F4-6.3 IS USM

  • Specifications
  • Block diagram
Marketed September 2019
Original Price Open price
Lens Construction (group) 15
Lens Construction (element) 21
No. of Diaphragm Blades 7 (circular aperture)
Minimum Aperture 36
Closest Focusing Distance (m) 0.5 (at 24mm)
Maximum Magnifcation (x) 0.26 (at 240mm)
Filter Diameter (mm) 72
Maximum Diameter x Length (mm) Approx. 80.4×122.5
Weight (g) Approx. 750

With a focal length ranging from 24 mm at the wide end to 240 mm at the telephoto end, the 10x optical zoom of the RF24-240mm F4-6.3 IS USM covers a versatile range of scenes including travel, snapshot, landscape and portrait photography. What’s more, the RF24-240mm F4-6.3 IS USM achieves significant image stabilization equivalent to approximately 5 shutter-speed stops1.

Thanks to the wide diameter and short back focus2 that characterize the RF mount, the rear lens group (the lens group closest to the camera’s sensor) of the RF24-240mm F4-6.3 IS USM can accommodate a larger lens that makes possible greater image quality from the center to the periphery while still retaining a compact and lightweight design. In addition, the use of UD3 and aspherical lenses help realize higher image quality by reducing a variety of aberrations.

The RF24-240mm F4-6.3 IS USM also utilizes Canon’s proprietary Nano USM, an ultrasonic motor that enables improved autofocus speeds. The combination of this technology with Dual Pixel CMOS AF used by EOS R system cameras makes possible autofocus performance that is fast and precise when capturing still photos and smooth during video shooting.

1 When used with the EOS R at a focal length of 240 mm. Based on CIPA standards.
2 A short distance between the optical axis from the vertex of the rear lens element to the imaging plane.
3 Ultra-low dispersion lenses, a proprietary Canon technology.

Block diagram

Aspherical lens UD lenses IS unit