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

Canon EF 70-300mm f/4-5.6L IS USM Lens
Compact Premium Telephoto Zoom for Canon EF-Mount Systems

The Canon EF 70-300mm f/4-5.6L IS USM is a highly versatile, relatively compact telephoto zoom lens belonging to Canon’s elite flagship L-series. Spanning a highly flexible 70-300mm reach on full-frame DSLRs (and a powerful 112-480mm equivalent on APS-C bodies), this professional-grade optic is engineered to capture distant action, wildlife, outdoor sports, and travel portraiture with pristine contrast and clarity.

Built to deliver top-tier optical rendering in a highly mobile footprint, the lens incorporates low-dispersion glass elements, a floating focus mechanism, and an advanced 4-stop image stabilization system. It remains a favorite for outdoor creators who need high-performance telephoto reach without the immense bulk of traditional professional super-zooms.

WELL-USED CONDITION NOTE

Please review the following cosmetic, structural, and optical evaluation with extreme care before making your purchase. This lens is listed under Well-Used Condition and has been priced aggressively for budget-conscious creators:

Heavy Exterior Scuffing: The off-white metal lens barrel chassis exhibits significant signs of heavy, long-term field use. Expect prominent scuffs, scratches, rub-wear marks, and finish loss across the casing.

Minor Internal Dust: There is a light-to-moderate accumulation of standard micro-dust particles trapped between the internal glass element groupings, common for a push-pull style telephoto zoom of this age. Extensive testing confirms these tiny particles rest far outside the native plane of focus and do not impact final image quality or resolve onto your digital sensor.

Missing Accessories (No Caps, Hood, or Collar): This lens is being sold as a bare barrel only. It does not include a front lens cap, rear lens cap, lens hood, or the optional rotating tripod collar/foot.

Value Proposition: Mechanically and electronically, the lens is fully operational. The USM autofocus snaps to target quickly, the internal stabilization engages perfectly, and the zoom rings rotate smoothly. This is a phenomenal savings opportunity for anyone seeking flagship L-series image quality at a fraction of the market price. All sales are final.

Key Features & Advanced L-Series Optics

Elite Ultra-Low Dispersion (UD) Glass: Outfitted with two UD elements that aggressively suppress secondary spectrum color fringing and chromatic aberrations, securing edge-to-edge clarity and strict color fidelity throughout the zoom sweep.

Floating Focus System Infrastructure: Utilizes an advanced floating elements mechanism that independently shifts glass groupings during focus adjustments. This layout maintains consistent, razor-sharp image resolution across the entire focusing envelope, from 3.9 feet to infinity.

Super Spectra Coating Shield: Individual lens elements feature multi-layered coatings to suppress ghosting, surface reflections, and internal flare, maintaining rich contrast and color neutrality when shooting in harsh midday sun or backlit settings.

Dual-Mode 4-Stop Image Stabilizer: Features a built-in optical stabilization system that counteracts handheld camera shake by up to four shutter speed stops. Includes Mode 1 for standard stationary handheld capture and Mode 2, which is specifically optimized for panning alongside fast-moving action.

Ring-Type Ultrasonic Motor (USM): Driven by a high-torque, ring-type USM working in tandem with an internal focusing framework to deliver near-instantaneous, whisper-quiet, and dead-accurate autofocus. Permits immediate full-time manual focus override simply by turning the focus ring.

Rounded Eight-Blade Diaphragm: Incorporates an 8-blade circular aperture array that produces a highly smooth, natural out-of-focus background quality (bokeh) for beautiful subject isolation.

Weather-Sealed Chassis with Fluorine Coatings: Built with rugged, weather-sealed gasket barriers at all critical junctions to safeguard against dust and moisture ingress in inclement climates. The exposed front and rear glass elements feature a protective fluorine coating that resists smudges, fingerprints, and water spots for quick field cleaning.

Technical Specifications

Lens System Classification: Flagship L-Series Stabilized Telephoto Zoom Lens

Lens Mount Type: Canon EF Mount (Full-Frame and APS-C DSLR Compatible)

Focal Length Range: 70-300mm (112-480mm equivalent on Canon APS-C sensors)

Maximum Variable Aperture: f/4 (at 70mm) to f/5.6 (at 300mm)

Minimum Operational Aperture: f/32 to f/45 via Electronic Camera Control

Filter Thread Diameter Size: 67mm (Non-rotating front layout)

Lens Optical Layout: 19 Elements configured in 14 Groups (Includes 2 UD Elements)

Image Stabilization Infrastructure: Optical Image Stabilizer (Up to 4.0 Stops) with Modes 1 and 2

Autofocus Motorization Gearing: Ring-Type Ultrasonic Motor (USM) with Full-Time Manual Override

Focusing Infrastructure System: Internal Floating Focus Mechanism

Minimum Object Focus Distance: 3.9 feet / 1.2 meters (Across entire zoom spectrum)

Maximum Close-Up Magnification Ratio: 0.21x (At the 300mm telephoto position)

Aperture Blade Count: 8-Blade Diaphragm (Rounded Layout)

Dimensions (Diameter x Length): Approx. 3.5 x 5.6 inches / 89.0 x 143.0 mm

Weight: Approx. 37.0 oz / 1050 grams