Canon Extender EF 2x II
The Canon Extender EF 2x II is a 2x teleconverter for the Canon EF autofocus mount, doubling the focal length of compatible EF telephoto lenses while costing two stops of light. It sits in the second generation of Canon's EF extender line and is aimed at sports, wildlife and aviation shooters who need extra reach without carrying a longer prime.
UK auction activity on this extender has been thin, with one verified hammer result of £94 in September 2025 — a wholesale saleroom price rather than a dealer asking figure. On that single data point the median and the range sit at the same £94 mark, so as of 2026 a clean copy is broadly worth what that lot fetched at auction; expect dealer retail to be appreciably higher once commission and warranty are layered on top.
Sales History
Prices shown are realised prices — auction results and completed eBay sales, never asking prices. Most saleroom figures are hammer prices, before commission; some houses publish a premium-inclusive figure, and we do not adjust for condition. Dealer and retail asking prices are typically higher. How this figure is calculated.
Prices updated: August 2026
| Date | Price | Value GBP | Source | |
|---|---|---|---|---|
| Aug 2026 | £54 | £54 | 🇬🇧 eBay | |
Title: Vintage Canon Extender EF 2x II Auto Focus Lens Accessory w/ Original Lens Caps
Description:
Canon Extender EF 2x II Auto Focus Lens Accessory. Beatrice Rose. West Yorkshire. May not include all the original accessories / booklets. {{tab4title}}. {{tab3title}}. {{tab2title}}. {{tab1title}}. Location: Leeds, United Kingdom |
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| Aug 2026 | USD 160 | £120 | 🇺🇸 eBay | |
Title: Canon Extender EF 2x II 2.0x Teleconverter EF Mount Lens From Japan Near Mint
Description:
Autofocus works properly with compatible EF lenses. This isCanon Extender EF 2x II. Compatible with selectedCanon EF lenses only. Condition : Near Mint. Fully tested. ■ Operation. Very clean condition. Location: Sapporo,Hokkaido, Japan |
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| Jul 2026 | USD 169 | £126 | 🇺🇸 eBay | |
Title: Canon EXTENDER EF 2X II TELECONVERTER [Excellent+++] US STOCK
Description:
Great shape, hardly used. Location: Scottsdale, AZ, United States |
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| Jul 2026 | USD 200 | £150 | 🇺🇸 eBay | |
Title: (Open Box) Canon 2x EF Extender II (Teleconverter) #3
Description:
Body Mount : Canon EF. Lens Mount : Canon EF. Kept in like new, open box condition. No original box. Serial(s): G000033410-40569. We will our best to give a prompt response. Location: Richmond, TX, United States |
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| Jan 2026 | £106 | £85 | 🇬🇧 Flints Auctions | |
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Auction: Cameras & Scientific Instruments (Lot 210) Title: A Canon Extender EF 2x II Lens Adapter
Description:
white, serial no.17273, body, VG-E, elements, E Note: This lot has a slight odour that is noticeable |
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| Sep 2025 | £94 | £75 | 🇬🇧 Flints Auctions | |
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Auction: Cameras & Scientific Instruments (Lot 468) Title: A Canon EF Extender 2X II
Description:
grey, barrel VG, optics VG, with caps. |
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| Apr 2023 | £80 | £80 | 🇬🇧 Special Auction Services | |
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Auction: Photographica & Cameras Auction (Lot 408) Title: A Canon EF 2x II Extender
Description:
A Canon EF 2x II Extender, barrel VG, elements VG, with front/rear caps, in maker's box |
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| Feb 2016 | £130 | £130 | 🇬🇧 Special Auction Services (archive) | |
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Auction: Fine Photographica Thursday 18th February 2016 at 11:00 (Lot 186) Title: A Canon EF Extender 2x II
Description:
A Canon EF Extender 2x II, white, serial no. 143835, body, VG-E, elements, VG-E, in maker's pouch and box Estimate: £100 - £150 |
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Frequently asked questions
What is a Canon Extender EF 2x II worth at UK auction today?
The single recorded UK auction hammer price is £94 from September 2025, so a tidy used example currently sells for around that level at saleroom level before any buyer's premium.
How much does a Canon Extender EF 2x II sell for compared to the newer III version?
Only the II version appears in the supplied sales history at a £94 hammer price; no comparative data for the III is provided here, so any premium for the newer version cannot be quantified from this dataset.
Is the Canon Extender EF 2x II a good value buy?
At the £94 auction price seen in 2025 it represents a low-cost route to doubling the reach of an EF telephoto, provided the glass is clean and the electronic contacts communicate correctly with the body.