Canon RF 100-400mm f/5.6-8 IS USM Lens

$1,003.00

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Vender : Canon

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Canon RF 100-400mm f/5.6-8 IS USM Lens Overview

Introduction

The Canon RF 100-400mm f/5.6-8 IS USM is a compact and affordable telephoto zoom lens for Canon’s full-frame RF mirrorless system. Offering impressive reach in a lightweight body, it’s a versatile option for wildlife, sports, and travel photographers who want high-quality telephoto performance without the bulk of traditional super-telephoto lenses.

Design & Build

Designed with portability in mind, the RF 100-400mm weighs just 635g, making it easy to carry on long shoots or trips. Despite its lightweight build, it maintains solid construction with a smooth zoom ring and well-placed controls for intuitive handling. The lens is designed to balance comfortably on both full-frame and APS-C RF-mount cameras.

Optical Performance

The lens provides a flexible focal range of 100–400mm, extending to 160–640mm equivalent when paired with an APS-C body. It features advanced optics with Super Spectra Coating to reduce flare and ghosting, ensuring sharp and vibrant images. The variable aperture of f/5.6–8 helps keep the design compact while still delivering quality results.

Autofocus & Stabilization

Powered by Canon’s Nano USM motor, the autofocus is fast, accurate, and quiet—ideal for both still photography and video recording. The built-in Optical Image Stabilizer offers up to 5.5 stops of shake correction, which extends to 6 stops when used with compatible in-body stabilization (IBIS). This ensures sharp handheld shots even at long focal lengths.

Creative Flexibility

The RF 100-400mm is compatible with Canon RF teleconverters, pushing its reach even further for wildlife and sports shooters. With a close focusing distance of just 88cm at 100mm, it also enables semi-macro shooting, offering up to 0.41x magnification for detailed close-ups of subjects like flowers, textures, and small wildlife.

Compatibility

As part of the RF lineup, this lens is designed exclusively for Canon EOS R-series mirrorless cameras. It complements lightweight bodies like the EOS R7 or EOS R10 for APS-C shooters, as well as full-frame models like the EOS R6 or EOS R5, making it a versatile telephoto solution across the lineup.

Conclusion

The Canon RF 100-400mm f/5.6-8 IS USM is an excellent choice for photographers who need telephoto reach in a compact, affordable package. With sharp optics, reliable stabilization, fast autofocus, and compatibility with teleconverters, it delivers flexibility for wildlife, sports, travel, and close-up photography. Lightweight yet powerful, this lens is a practical addition to any RF-mount kit.

Canon RF 100-400mm F/5.6-8 IS USM Camera Lens Specs

Focal Length 100 to 400mm
Maximum Aperture f/5.6 to 8
Minimum Aperture f/32 to 45
Lens Mount Canon RF
Format Compatibility Full-Frame
Angle of View 24° to 6° 10'
Minimum Focus Distance 2.9' / 88 cm
Maximum Magnification 0.41x
Optical Design 12 Elements in 9 Groups
Diaphragm Blades 9, Rounded
Focus Type Autofocus
Image Stabilization Yes
Filter Size 67 mm (Front)
Dimensions (ø x L) 3.1 x 6.5" / 79.5 x 164.7 mm
Weight 1.4 lb / 635 g

Thank you for choosing Keymra Photo. We are dedicated to delivering your premium photography, cinematography, and imaging equipment safely, while providing industry-leading protections to safeguard your investment.

Below are the terms and conditions that govern our domestic logistics network and our comprehensive multi-year warranty program.


Part 1: Shipping & Delivery Framework (Canada)


1. Our Courier Network
To ensure that your valuable equipment arrives securely and in perfect condition, we partner exclusively with Canada’s leading and most reliable shipping carriers. All Canadian orders are shipped using trackable, insured services via:


  • Canada Post
  • Purolator
  • Canpar


Carriers are dynamically optimized at checkout based on your delivery address, package dimensions, and regional transit reliability.


2. Processing & Delivery Timelines

 

  • Handling Time: Most orders undergo a thorough quality check, are securely packed, and are dispatched from our warehouse within three (3) business days from the date of order authorization.
  • Delivery Window: You can generally expect your order to arrive within ten (10) business days from your original order date.
  • Tracking: Automated tracking information is issued via email immediately upon carrier handover.


3. Shipping Security & Transit Risk

 

  • Mandatory Adult Signature: Due to the premium nature and high financial value of professional cameras and cinema rigs, all major shipments require an adult signature upon delivery. Packages will not be left unattended on doorsteps under any circumstances.

  • Damage in Transit: Legal title and risk of loss pass to the buyer upon courier handover. If your package arrives with visible signs of transit damage or tampering, please take photos and contact our support team within 24 hours of delivery to initiate an immediate carrier insurance claim.

Part 2: Comprehensive Warranty Program

All eligible high-end optical and imaging products purchased through our store are backed by a structured, multi-year warranty program to protect your gear from internal mechanical or electronic non-conformities.

1. Warranty Coverage Tiers

Equipment Classification / Brands

Warranty Term

Scope of Protection

Digital Cameras, Mirrorless Bodies & Camcorders

2 Years from delivery date

Internal electronics, image sensors, processors, and mechanical shutter builds.

Standard System Lenses (Sony, Canon, Nikon, etc.)

2 Years from delivery date

Autofocus linear motors, internal optical groups, and built-in stabilization (OSS/IS).

Sigma Optics & Tamron Premium Lenses

5 Years from delivery date

Extended factory defect protection and internal optomechanical assembly alignments.



2. Localized Claims Management

All technical diagnostics, parts replacements, and official repairs are managed locally by Keymra Photo. You do not have to worry about complicated manufacturer workflows or cross-border processing bottlenecks.

3. Our Two-Way Shipping Promise

We believe you shouldn't face hidden expenses due to a factory defect.


  • 100% Cost-Free Approved Claims: Once your warranty claim is technically evaluated and approved by our service team, Keymra Photo covers the shipping costs on both sides.
  • We will provide you with an inbound prepaid shipping label, handle the required repairs, and return the gear back to your doorstep entirely free of charge.


Warranty Exclusions Notice:

This warranty strictly covers organic manufacturing defects or internal component malfunctions under normal operational conditions. It explicitly excludes damage caused by accidental impacts or drops, moisture/liquid submersion, sand or dust intrusion, unauthorised firmware alterations, or standard external cosmetic wear and tear.


Contact Our Support & Service Team

If you need to check on a shipment, register your equipment, or file a warranty diagnostic claim, our Canadian team is available Monday to Friday, 10:00 AM to 6:00 PM EST.

  • Administrative Office: Keymra Photo Canada, 2 County Court BLVD, Suite # 400, Brampton, ON L6W 3W8, Canada
  • Filing & Support Inbox: support@keymraphoto.com