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Canon Extender EF 1.4x III

The Canon Extender EF 1.4x III multiplies focal length by 1.4x and costs 1 stop of light. Canon lists it for 3 lenses we carry, including the EF 100-400mm f/4.5-5.6L IS II USM and EF 70-200mm f/2.8L IS III USM.

Starting from
£439 new
Average price across retailers: ~£459
Available at 3 retailers
Check price at Wex Photo Video
✓ Available at 3 retailers 🔒 No signup needed 📦 UK stock only
RetailerPrice
Wex Photo Video
Wex Photo Video
£439
was £460
On Sale
Check on Wex Photo Video →
Clifton Cameras
Clifton Cameras
£479
Check on Clifton Cameras →
Amazon
Amazon
—
Check on Amazon →
Prices are synced live from UK retailers. Not every product will be stocked by every retailer; older models may only be available second hand.

Full specs coming soon.

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3 lenses this fits.

EF 70-200mm f/4L IS II USM
Canon
EF 70-200mm f/4L IS II USM
£1629
EF 70-200mm f/2.8L IS III USM
Canon
EF 70-200mm f/2.8L IS III USM
£2199
EF 100-400mm f/4.5-5.6L IS II USM
Canon
EF 100-400mm f/4.5-5.6L IS II USM
£2679
✅ Great For

Use-case data coming soon.

⚠️ Not Ideal For

Use-case data coming soon.

📝 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 →
Price History — Canon Extender EF 1.4x III
New prices, last 30 days