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Canon 100-300mm f/4.5-5.6 USM EF Mount Lens {58}

Model #212443
  • $135.00

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New in box complete with manufacturer's USA warranty. Not previously owned or used.
Essentially new with no signs of use. “Open box.” In manufacturer's packaging with original accessories and instructions. 180-day warranty.
Barely used with virtually no traces of wear. Only the closest inspections will reveal slight use. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Lightly used with limited signs of wear. Exceptionally nice but may have slight wear on finish visible. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Noticeably used with average signs of wear. Shows moderate wear for the age of the item, with the possibility of blemishes and/or minimal dings. Lens glass may have average dust and zoom/focus ring tension may have slight looseness or tightness overall, but will not affect picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Frequently used with above-average wear. May have dents, dings, or finish loss. Lens glass may have small scratches, dust, and blemishes, and zoom/focus ring tension may have moderate looseness or tightness overall, but should not affect picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Heavily used with extensive visible wear. Equipment is rough, with multiple impressions in the finish, excessive finish loss and brassing. Glass will have marks, fungus and/or heavy/cloudy haze which could affect picture quality. Accessories usually not included, unless noted in listing. Not covered under KEH warranty.
Non-functional or damaged. Equipment will not work. Usable for parts. Not covered under KEH warranty and non-returnable.
EX Excellent
With Caps
$135.00
Only 1 left!
BN Bargain
With Caps and Hood
$118.00
Only 1 left!
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Canon's 100-300mm USM zoom built for reach on a budget.

The Canon EF 100-300mm f/4.5-5.6 USM covers the telephoto range that wildlife, sports, and event shooters return to again and again. The USM motor, confirmed in the model designation, delivers autofocus that is quiet and fast enough for moving subjects, a meaningful advantage over screw-drive alternatives when tracking birds in flight or athletes crossing the frame. The 58mm filter thread keeps accessory costs reasonable.

The variable maximum aperture across the zoom range is the trade-off you accept for a lens at this size and price point, and it is a trade-off that makes sense for outdoor shooting in decent light. Canon EF mount compatibility means this lens works natively on Canon EOS digital and film bodies spanning decades of the EF lineup, giving it a wide base of compatible cameras without any adapter required.

Who It's For

Sports photographers shooting sideline action will appreciate the USM autofocus keeping pace with unpredictable movement at the long end of the range. Wildlife shooters working in open terrain get genuine 300mm reach in a native EF mount package. Birders who already own Canon EOS bodies can pick this up as an entry point into serious telephoto work. Event and crowd photographers covering ceremonies or performances from a fixed position will find the 100-300mm zoom span practical for framing adjustment without physically moving.

Key Features

  • USM autofocus motor for quiet, fast focusing on moving subjects
  • 100-300mm telephoto zoom for wildlife and sports
  • Variable f/4.5–5.6 maximum aperture across zoom range
  • 58mm filter thread keeps accessory costs low
  • Canon EF mount for native compatibility with Canon DSLR and film bodies

FAQ

What autofocus motor does this lens use?
The USM (Ultrasonic Motor) delivers quiet, fast autofocus suitable for moving subjects like wildlife and sports. It's a meaningful step up from screw-drive alternatives when tracking action.
What's the variable aperture trade-off?
The f/4.5–5.6 range is typical for telephoto zooms at this focal length and price point. It's a solid trade-off for outdoor shooting in decent light, and the smaller aperture helps keep the lens compact and affordable.
What filter size does it use?
58mm filters thread directly onto the lens, keeping accessory costs reasonable compared to larger telephoto zooms.
Which Canon bodies will this lens mount on?
Canon EF mount compatibility gives you native support across the entire EF lens lineup - digital EOS bodies and EF-compatible film cameras spanning decades without any adapter required.
Is this lens suitable for sports and wildlife?
Yes. The 100-300mm range covers standard telephoto focal lengths for these applications, and USM autofocus is fast enough for tracking moving subjects in frame.
Can I use this on a mirrorless camera?
The EF mount is designed for Canon DSLR and film bodies. Third-party adapter manufacturers produce EF-to-mirrorless adapters for some systems - check availability for your specific camera.
SpecificationValue
Focal Length100-300mm
Max Aperturef/4.5-5.6
MountCanon EF
Filter Thread58mm

This description was generated using AI based on KEH's internal product standards, product expertise, and knowing what customers care about most. While we strive for accuracy, details may vary by individual item.

Brand Name Canon
Filter Size 58mm
Focus Type Autofocus (lens motor)
Lens Mount Canon EF
Lens Type Telephoto / Long
Max Focal Length 300mm
Min Focal Length 100mm