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Canon EF 300mm f/4L IS USM

Canon's 1997 EF 300 mm f/4L IS USM: a compact super-telephoto with 2-stop IS (with a panning mode), a focus limiter and a built-in hood.

Used from
£419
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Used
eBay
eBay used
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£307
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MPB
MPB used
Inspected used stock · 12-month warranty
£419
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New
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eBay
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£616
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Prices are synced live from UK retailers. Not every product will be stocked by every retailer; older models may only be available second hand.
Core
Released
1997
Focal Length
300mm
Aperture
f/4
Compatible Mount
Canon EF
Filter Size
77mm
Dimensions
90mm diameter × 221mm length
Weight
1190g
Weather Sealed
No
Optics & Focus
AF Motor
Ultrasonic Motor (USM)
Optical IS
Optical IS, 2 stops
Aperture Blades
8
Magnification
0.24x
Min. Focus Distance
1.5m

Select up to 2 cameras to compare against the EF 300mm f/4L IS USM. It's always pinned as the baseline.

Select 1–3 cameras to compare

24 cameras compatible with the Canon EF mount.

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EOS-1D Mark III
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EOS-1D Mark IV
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EOS-1D Mark IV
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EOS 5D Mark III
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EOS-1D X
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EOS-1D X Mark II
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GearScore™ — Suitability by Genre

Base score — computed from verified specs for an enthusiast shooting photo and video. Camera Match adjusts it for your skill level and priorities.

Portrait
6.7/10
Street
4.7/10
Travel
4.4/10
Wedding & Events
5.9/10
Filmmaking
4.2/10
Documentary
4.8/10
Sports & Action
7.7/10
Landscape
5.2/10
Wildlife
6.7/10
Casual
4.8/10
Food
5.4/10
Architecture
5.6/10
Underwater
5.3/10
✅ Great For
⚡
Sports & Action 7.7 Strong on autofocus, focal length and optical quality.
⚠️ Not Ideal For
🎬
Filmmaking 4.2 Held back by video handling and focal length.
✈️
Travel 4.4 Held back by portability and focal length.
🌆
Street 4.7 Held back by focal length and portability.
📝 How suitability scores are calculated GearScore™ genre scores are calculated from this camera's verified specifications — autofocus, sensor, weight, weather sealing and more — weighted by what matters for each type of photography. Where a spec sheet misses something (e.g. a manual-focus rangefinder for street), we apply a documented editorial adjustment. Scores are not based on customer reviews. See our full methodology →
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