Lens
Focal Length 16mm
Maximum and Minimum Aperture F2.8 F22
Lens Mount Type RF Mount; Metal Mount
Compatible Cameras Canon EOS R-series, including full-frame
Minimum Focusing Distance 5.1 in. / 0.43 ft. / 0.13m
Maximum Magnification 0.26x
Field of View, at Minimum Focus Distance Approx. 5.3 x 3.5 in. 134 x 90mm
Angle of View Diagonal Approx. 108°10"
Optical Design
Lens Construction 9 elements in 7 groups
Special Elements: One Aspherical element
Lens Coating Canon SSC, Super Spectra Coating
Filter Size Diameter Ø43mm
Aperture Blades 7; circular shape
Image Stabilization None (with EOS R5 in-body stabilization 5.5 stops correction)
Focusing
Focusing Drive System Canon STM (Stepping motor; gear-type)
Full-time Manual Focusing
Yes, after One-Shot AF; after Servo AF with compatible EOS R-series cameras
Dual Pixel CMOS AF Coverage
Horizontal x Vertical
EOS R/RP Approx. 88% x 100%
EOS R5/R6 Approx. 90% x 100%
Face Detect + Tracking Approx. 100% x 100%
Exterior Design
Control Ring
Dual-function Manual focus ring / Control Ring (selected with switch on lens)
No clicks when set to Control Ring function
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 Provided on lens barrel
Distance Scale
None
Distance scale available in EVF or Live View LCD screen of compatible
EOS R-series cameras
Distance Limiter Switch None
Specifications
RF16mm F2.8 STM
Dust / Weather Resistant Construction None
Dimensions, Weight
Maximum Outer Diameter x Length Approx. 1.6 in. x 2.7 in., 40.1 x ø69.2mm
Weight Approx. 5.8 oz. / 0.4 lb. / 165g
Accessories
Lens hood
Canon EW-65C
Bayonet-mount, petal-shaped hood
Optional accessory, sold separately
Lens Cap
(Front) Canon E-45 (center pinch-type) (Bundled)
(Rear) Canon Dust Cap RF
Dust Cap Canon Lens Dust Cap RF (Bundled)
Lens Case
Canon Lens Case LP1014
Optional accessory, sold separately
Extension Tubes None (No Canon RF mount extension tubes)
Close-up Lenses 250D / 500D None (no ø43mm size available)
Canon RF Extender 1.4x/2x Not compatible
Canon Gelatin Filter Holder III/IV Not compatible