Canon EF 70-300mm f/4-5.6 L IS USM

The Canon EF 70-300mm f/4-5.6 L IS USM is a weather-sealed L-series telephoto zoom lens with a 67mm filter thread, ring-type USM autofocus, built-in image stabilisation, 8-blade aperture, 1.2m minimum focus distance, and a weight of 1050 grams — designed for Canon EF mount DSLRs.

Key Specifications

• Focal length: 70–300mm zoom range
• Maximum aperture: f/4 (wide) — f/5.6 (tele)
• Minimum aperture: f/32
• Aperture blades: 8 (for rounder bokeh)
• AF motor: Ring-type USM — fast, near-silent autofocus
• Image Stabilisation: Yes
• Minimum focus distance: 1.2m
• Filter thread: 67mm
• Weight: 1050g
• Lens mount: Canon EF — compatible with full-frame and APS-C Canon EF cameras

What makes the Canon EF 70-300mm f/4-5.6 L IS USM special?

The "L" in the name means this lens sits in Canon's professional lineup — and you can feel that the moment you pick it up. The build quality is noticeably more robust than non-L telephoto zooms, with weather sealing that lets you shoot in light rain or dusty conditions without stressing about your gear.

The ring-type USM motor makes autofocus genuinely fast and nearly silent. That's a real advantage when you're shooting wildlife or sports and need to track a moving subject without scaring it off or missing the moment. Combined with the built-in image stabilisation, you can get sharp handheld shots at surprisingly slow shutter speeds at the long end.

Compared to the Canon EF 100-400mm f/4.5-5.6L IS USM, this lens is considerably more compact and lighter — which matters a lot when you're spending a full day on your feet at a safari park, airshow, or sports event. The 70-300mm range covers the most-used telephoto focal lengths without the bulk of a 400mm prime or a 100-400mm zoom.

If you shoot on a crop-sensor DSLR, the effective focal length becomes roughly 112–480mm — which pushes wildlife and sports reach even further. The 8-blade aperture helps deliver smooth, rounded bokeh when you're isolating a subject at 300mm, making this lens surprisingly usable for outdoor portraits too.

The Canon EF 300mm f/4L IS USM prime has a one-stop aperture advantage at the long end and can edge it out on sharpness wide open, but it locks you into a single focal length. The 70-300mm L gives you flexibility the prime simply can't match. If you want a third-party alternative, the Tamron SP 70-300mm f/4-5.6 is a popular budget option — but it doesn't carry L-series build quality or the same USM performance.

Who is the Canon EF 70-300mm f/4-5.6 L IS USM for?

This lens is a natural fit for wildlife photographers who need to move light. At 1050g it's not featherweight, but compared to super-telephoto primes it's genuinely portable — you can sling it over your shoulder all day at the zoo or out on a trail without your back giving up on you.

Sports shooters who cover outdoor events — football, cycling, motorsport, athletics — will appreciate the reach combined with fast USM tracking. 300mm on a full-frame body covers most field sports from a decent position, and on an APS-C body the extra reach is a bonus. Pair it with a Canon EOS 7D Mark II or a Canon EOS 90D for a seriously capable sports setup.

Travel photographers who don't want to carry multiple lenses will find the 70-300mm range covers distant architecture, wildlife encounters, and compressed landscape shots from a single lens that fits in a camera bag without dominating it. The image stabilisation makes it forgiving when you're shooting from a moving boat or vehicle.

It also works as an outdoor portrait lens — at 200–300mm and f/5.6, background separation is smooth, and the minimum focus distance of 1.2m is close enough to fill the frame with a face at mid-range focal lengths.

Buying a used Canon EF 70-300mm f/4-5.6 L IS USM

Buying this lens second-hand makes a lot of sense. It's a well-built L-series lens that was designed to last, so a pre-owned copy that's been properly maintained is typically every bit as capable as a new one. Here's what to check before you buy:

• IS unit: Switch it on and listen — a working IS has a subtle hum and visibly stabilises the viewfinder image. A rattling or non-functioning IS is a red flag.
• USM AF: Test autofocus in both directions across the full zoom range. It should be snappy and silent. Any grinding or hunting points to motor wear.
• Zoom and focus rings: Both should move smoothly without stiffness or play. The zoom ring in particular gets a lot of use on this focal length.
• Front and rear elements: Check for fungus (branching grey patterns), haze, or deep scratches. Minor dust inside is normal and doesn't affect image quality.
• Mount contacts: The gold EF contacts should be clean and undamaged — corroded contacts cause communication errors with the camera body.
• Weather sealing: Inspect the mount seal (the rubber ring at the rear) — it should be intact and uncompressed.

Every used Canon EF 70-300mm f/4-5.6 L IS USM sold here comes with a minimum 12 months warranty, is individually photographed, and has been professionally inspected. The exact warranty period is shown on the variant listing.