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Canon RF-S 18-45mm F/4.5 - 6.3 IS STM Lens

MFR# 4858C002
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As part of Canon's new RF-S lens line, the RF-S18-45mm F4.5-6.3 IS STM gives you the flexibility you desire without taking up your whole camera bag. This lens was designed with smaller APS-C sensors in mind, and when attached to a full frame EOS R camera, automatically enables the 1.6x crop mode. It offers 100% x 100% Dual Pixel CMOS AF coverage for APS-C sensors, and 80% x 80% Dual Pixel CMOS AF coverage for Full Frame sensors (in crop mode). The small size of the RF-S18-45mm F4.5-6.3 IS STM and clever lens retraction mechanism lets it fit just about anywhere, making it a great lens to bring with you on a walk or wherever the day takes you. The lead screw-type stepping motor (STM) helps ensure smooth autofocus and quiet operation, letting you capture videos with great audio and minimal background noise so you won't distract your subject in a quiet photo environment. Optical Image Stabilization provides up to 4 stops of correction, and up to 6 stops with Coordinated IS. This advanced image stabilization can result in sharper photos with minimal blur, even in low light situations. When you add all of this together, you get a wonderful, lightweight, and versatile lens that is designed to fit into your life.

Compact-size, Standard Zoom Lens for everyday use

High performance in a small, lightweight package, the RF-S18-45mm F4.5-6.3 IS STM puts a versatile zoom range (35mm equivalent - 29-72mm coverage) into a compact package that's easy to carry. Its optical system and clever lens retraction mechanism are designed to help ensure high image quality, while keeping the lens compact and easily portable so it stays out of the way and is ready when you are. Bring the RF-S18-45mm F4.5-6.3 IS STM and your camera with you in your daypack or camera bag so you can capture life's constant action on a walk, vacation or in your own backyard.

Lead Screw-type STM

When it comes to recording video, you want to be sure you capture all the subtle sounds of what you're recording. Thanks to its lead screw-type stepping motor (STM), the RF-S18-45mm F4.5-6.3 IS STM focuses smoothly and quietly, letting you concentrate on the dialogue, music or other important sounds you want to capture.

Image Stabilization at up to 4 Stops of Shake Correction

For consistently sharp results, the RF-S18-45mm F4.5-6.3 IS STM features an improved Image Stabilizer system that provides enhanced shake reduction for up to 4 stops* of shake correction. When paired with an EOS R camera that has In Body Image Stabilization (IBIS), the Coordinated IS allows for up to 6 stops of correction. This means more reliable handheld performance and clearer detail in low-light situations, without having to increase the ISO or decrease the shutter speed. Because of its enhanced stabilization, the RF-S18-45mm F4.5-6.3 IS STM can also help minimize the need for a tripod

Two Aspherical Elements and Canon Super Spectra Coating

Taking advantage of the Canon RF lens mount, the RF-S18-150mm F3.5-6.3 IS STM lens offers great optical quality. Its optical design includes two aspheric elements, one Ultra-low Dispersion (UD) glass element for high image quality from center to corner, and Canon Super Spectra Coating to minimize ghosting and flare.


Focal Length


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 Magnification

0.16x (at 45 mm)

Field of View, at Minimum Focus Distance

Approx. 153 x 102 mm (at 18 mm) to approx. 137 x 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

ο49 mm

Aperture Blades


Image Stabilization

4 stops correction with In-lens Optical Image Stabilization (6 stops correction with EOS R5 in-body coordinated Image stabilization)


Focusing Drive System

Canon STM (Leadscrew type STM)

Full-time Manual Focusing

(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

Distance scale available in EVF or Live View LCD screen of compatible EOS R-series cameras

Distance Limiter Switch


Dust / Weather Resistant Construction


Dimensions & Weight

Maximum Outer Diameter x Length

Approx. ο2.7 in. x 1.7 in. (ο68.9mm x 44.3mm)


Approx. 4.6 oz. / 0.3 lb. / 130g
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