Canon EF 300mm f/2.8L USM (1987–1999)

Name: Canon 300mm
Brand: Canon

It weighs 2855g, and it feels like it. Dense optics, built for big jobs.

Overview

This is the lens that helped Canon break into professional sports photography. The EF 300mm f/2.8L USM launched in 1987 as the world's first interchangeable lens with a built-in ring-type ultrasonic motor. That meant autofocus that was fast and silent, which counts when a sprinter is about to explode from the blocks or a bird is about to take flight. For over a decade, it was the highest-performance 300mm in the world.

At f/2.8, it gives a reach and speed combination that still holds up today, with full-frame coverage and internal focusing. The 3m close focus and 0.11× macro ratio open it up to wildlife, portraiture and even detail work, though action is its real job. Owners report that despite the 2855g weight, it's manageable handheld for short bursts, and that its balance on pro bodies like the EOS-1 series feels natural. It's not light, but it's lighter than its f/2.8 siblings like the 400mm, and that helps when you're on your feet all day.

Specifications

Manufacturer	Canon
Product type	Super telephoto prime lens
Focal Length	300mm
Maximum Aperture	f/2.8
Minimum Aperture	f/32
Lens Mount	EF
Filter	48mm drop-in filters
Lens Construction	10 elements in 8 groups
Aperture Blades	8
Close Focus	3m
Macro Ratio	0.11×
Coverage	Full-frame
Dimensions (Diameter x Length)	125 mm diameter by 253 mm long
Weight	2855g
Image Stabilization	No
Hood	ET-118 hood

Key Features

Fluorite and UD Glass Elements

The optical formula uses a fluorite element and one UD (Ultra-low Dispersion) glass element to correct chromatic aberration. The contrast and clarity made it a favorite at the 1988 Summer Olympics. The design was cutting-edge then, and sharpness is still consistently reported as exceptional, even by modern standards.

Ring-Type Ultrasonic Motor (USM)

Canon didn't just adopt ultrasonic motor technology - they introduced it with this lens. The ring-type USM gives autofocus that owners describe as "super fast," a real advantage in the late 1980s and early 1990s, when Nikon's competing 300mm f/2.8 lenses lagged in AF speed. The motor is built into the lens, so focusing is quick, quiet and precise enough to keep up with athletes in motion.

Motor-Driven Manual Focus with Encoder Ring

Manual focus isn't direct. The focus ring acts as an encoder, sending signals to the camera body, which then commands the motor. This allows full-time manual override: grab the ring while autofocus is active, and the system yields instantly. It runs at three selectable speeds, depending on a switch setting. Some users report this feels less tactile than mechanical focus, but the speed and responsiveness make up for it in fast-paced environments.

Focus Preset Function

The Focus Preset lets the lens instantly return to a pre-set focusing distance. That helps when action is expected at a known point, say a batter's box or a bird's perch. Once it's set, the photographer can go back to that exact focus point with a button press and skip the autofocus hunting. It's a mechanical memory system for repetitive shooting scenarios.

Historical Context

Canon brought the EF 300mm f/2.8L USM to the 1988 Summer Olympics, where it made a strong impression on professionals covering the games. Its speed, reach and reliable autofocus gave Canon shooters an edge. Paired with the EOS-1 in 1989, it became a cornerstone of a system that steadily pulled the pro market away from Nikon. For nearly ten years, Nikon had no equivalent in autofocus performance, and during that window Canon cemented its reputation in sports and action photography.

Collectibility & Value

Originally priced at $2,100, the lens now trades on the used market for about $1,250, though prices vary with condition and seller. According to available documentation, it remains a compelling alternative to the newer Canon EF 300mm f/2.8L IS II, which costs roughly three times as much. The older USM version lacks image stabilization, closer focusing and the weight savings of the IS II, but for most action work, especially on a monopod or gimballed head, the optical performance is considered nearly identical. Canon discontinued it in 1999.