Canon EF300mm f/2.8L IS II USM +1.4x III

Canon

Canon EF300mm f/2.8L IS II USM +1.4x III

📏 300mm 💡 f/2.8 🔌 Canon EF Mount 🎯 Prime ⚖️ 2350g 📷 IS 🌧️ Sealed
MSRP $7,000

PhotoWorkout Score

Our composite editorial score for this product. Updated 2026-06-14.

How we score ›
ComponentWeightScore
Customer Reviews 35% 88.2
Technical Analysis 30% 72.0
Market Position 20% 65.0
Value Proposition 15% 66.3

Age adjustment: ×0.85 (older models get a slight downward adjustment so newer products with current technology are fairly represented).

📖 Overview

The Canon EF300mm f/2.8L IS II USM +1.4x III is a professional telephoto prime, bundled with a 1.4x teleconverter for added reach. It is a top choice for wildlife and sports photography, offering exceptional image quality and a fast aperture. The combination is bulky and expensive, making it best suited for serious photographers.

📸 Browse 32 real-world sample photos taken with this lens by photographers worldwide on SampleShots.

📋 Specifications

Focal Length 300mm
Max Aperture f/2.8
Min Aperture f/32
Lens Type Prime
Mount Canon EF
AF Motor USM
Image Stabilization Yes
Autofocus Yes
Weather Sealed Yes
Min Focus Distance 2.0 cm
Max Magnification 0.18x
Elements / Groups 16 elements in 12 groups
Aperture Blades 9
Filter Diameter 52mm
Weight 2350g
Dimensions 128.0 x 248.0mm
Release Year 2011
MSRP $7,000

🛒 Where to Buy the Canon EF300mm f/2.8L IS II USM +1.4x III

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🖼️ Sample Photos

Real-world photos taken with the Canon EF300mm f/2.8L IS II USM +1.4x III, sourced from SampleShots.

📷 Compatible Cameras

Native Mount

+ 29 more compatible cameras

🔄 Via Adapter (24 cameras)

🔄 Other Canon Lenses