Specification Sheet
Lens
Focal Length 18-45mm
Maximum and Minimum Aperture f/4.5 - f/32
Lens Mount Type RF Mount
Compatible Cameras
Canon EOS R-series, APS-C and full-frame (automatic APS-C sensor cropping if
used on full-frame EOS R-series cameras)
Minimum Focusing Distance 0.20 m (at 18 mm)
Maximum Magnication 0.16x (at 45 mm)
Field of View, at Minimum Focus Distance Approx. 153 × 102 mm (at 18 mm) to approx. 137 × 92 mm (at 45 mm)
Angle of View (Diagonal) Approx. 74° 20’ - 33° 40’
Optical Design
Lens Construction 7 elements in 7 groups
Special Elements (Two) Aspherical elements
Lens Coating Canon SSC (Super Spectra Coating)
Filter Size Diameter ø49 mm
Aperture Blades 7
Image Stabilization
4 stops correction with In-lens Optical Image Stabilization (6 stops correction with
EOS R5 in-body coordinated Image stabilization)
Focusing
Focusing Drive System Canon STM (Leadscrew type STM)
Full-time Manual Focusing
Yes
(Supports both ONE SHOT AF and SERVO AF with compatible EOS R-series
cameras)
Dual Pixel CMOS AF Coverage
(Horizontal x Vertical)
• EOS R — Approx. 80% x 80%
• EOS R5 — Approx. 80% x 80%
• EOS R7/R10 — Approx. 100% x 100%
Exterior Design
Control Ring Dual-function Manual focus ring / Control Ring (selected using camera menu)
Manual Focus Ring
Electronic ring system
• Full-time Manual focus possible
• No physical limit to ring rotational angle
AF/MF Switch None — focus mode selected in camera menu
MF/Control Ring Switch None — must be selected in camera menu
Distance Scale
None
• Distance scale available in EVF or Live View LCD screen of compatible
EOS R-series cameras
Specications
RF-S18-45mm F4.5-6.3 IS STM