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

An Affordable, Compact Telephoto Zoom for Wildlife and Sports

The Canon RF 100-400mm f/5.6-8 IS USM Lens is a compact, lightweight telephoto zoom designed for Canon RF-mount full-frame cameras, built for photographers who want serious reach for wildlife, sports, and distant subjects without a large investment or bulky kit. With a versatile 100-400mm zoom range packed into a surprisingly small package, this lens is well-suited to sidelines, nature outings, and family adventures alike.

Designed for Portability Without Sacrificing Reach

This lens is made for photographers who want telephoto power that doesn't weigh them down. Weighing just 635g and measuring 164.7mm in length at 100mm, it's a compact, well-balanced lens that fits easily into a kit bag, even when fully extended to 400mm. Despite its modest size and price, it's the first non-L-series Canon lens with tele extender compatibility, accepting both the RF 1.4x and RF 2x extenders for an effective reach of up to 560mm or 800mm, respectively, with no limitations on the zoom range.

Optical Performance and Build

The lens uses a single Ultra-Low Dispersion glass element toward the front of the optical group to correct chromatic aberration throughout the entire zoom range, keeping images crisp and colorful with minimal color blur. A 9-blade circular aperture produces pleasing background blur, and an internal focusing mechanism keeps the lens barrel from rotating during use, maintaining balance and stability while shooting.

Fast Autofocus and Effective Stabilization

A Nano USM autofocus system delivers high-speed, smooth, and quiet focusing performance well-suited to fast-moving subjects. The lens's built-in Optical Image Stabilizer provides up to 5.5 stops of shake correction on its own, increasing to up to 6 stops when paired with an EOS R-series camera featuring in-body image stabilization, helping achieve sharp handheld stills and smooth video without needing a tripod. An impressive minimum focusing distance of 88cm and a maximum magnification of 0.41x at 400mm add close-up versatility beyond distant subjects.

Key Features at a Glance

• Lens: Canon RF 100-400mm f/5.6-8 IS USM
• Mount: Canon RF (full-frame)
• Focal length: 100-400mm
• Maximum aperture: f/5.6 (wide) to f/8 (tele)
• Optical design: includes Ultra-Low Dispersion (UD) glass element
• Aperture blades: 9 (circular)
• Autofocus: Nano USM
• Image stabilization: up to 5.5 stops (up to 6 stops with compatible IBIS)
• Minimum focus distance: 0.88m (at 200mm); varies by focal length
• Maximum magnification: 0.41x (at 400mm)
• Weight: approx. 635g
• Filter diameter: 67mm
• Compatibility: Extender RF 1.4x (140-560mm) and RF 2x (200-800mm), no zoom range limitations
• Controls: customizable control ring for exposure compensation, shutter speed, aperture, or ISO

A Strong Choice for Budget-Friendly Wildlife and Sports Photography

The Canon RF 100-400mm f/5.6-8 IS USM is a smart choice for photographers who want genuine telephoto reach in a compact, affordable package. Its combination of a versatile zoom range, effective image stabilization, fast autofocus, and extender compatibility make it a dependable choice for wildlife photography, sports sidelines, travel, and everyday outdoor adventures.