Canon RF-S 3.9mm F3.5 STM Dual Fisheye
Lens for Canon RF · Announced June 2024
Official site on usa.canon.com (opens the maker's site in a new tab)
- APS-C lens
- Ultra-wide
No live price in United Kingdom yet. We show a price only when a retailer's feed or API sends it: where to look.
- Focal length: 3.9mm, 6mm equivalent
- Max aperture: f/3.5
- Optical stabilisation: None
- Autofocus motor: STM
- Weight: 290 g
- Weather sealing: No
- Max magnification: 0.03×, Focuses to 0.20 m
RF-S 3.9mm F3.5 STM Dual Fisheye overview
The Canon RF-S 3.9mm F3.5 STM Dual Fisheye is a 3.9mm f/3.5 prime for APS-C cameras on Canon RF, announced by Canon in June 2024. 7 cameras we track take it without an adapter.
Going by its spec sheet, it suits landscapes and interiors. It is a weaker pick for rain and dust as well as close-ups.
No store we track in the United Kingdom lists it today. It is listed in the United States and Australia.
Where to buy the RF-S 3.9mm F3.5 STM Dual Fisheye in United Kingdom
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Reviews
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Expert reviews
Each link opens that site's own search for the RF-S 3.9mm F3.5 STM Dual Fisheye.
Member stories · RF-S 3.9mm F3.5 STM Dual Fisheye
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Members' own words, not CamCompare's. All member stories
Things to know
- 3.9mm prime, f/3.5; 6mm equivalent.
- APS-C lens: on a full-frame body of the same mount it crops the frame.
- Autofocus (STM motor); no optical stabilisation.
- 290 g.
- Focuses down to 0.20 m, up to 0.03× magnification.
- Not weather sealed.
- No used body-only listings at the stores we track in United Kingdom today: check eBay and the Used filter.
Good for
- Landscapes and interiors (6mm-equivalent wide end)
Not the best for
- Rain and dust (not weather sealed)
- Close-ups (0.03× magnification)
From the RF-S 3.9mm F3.5 STM Dual Fisheye's published specs, not from a review.
Price history
Price around the world
Cheapest in the US. Not priced in the UK yet.
Prices are in each market's own currency. Under each: ≈ in GBP at today's exchange rate. Body only; where a market lists only kits, its cheapest kit is shown and marked.
| Market | Lowest new | Lowest used/refurb |
|---|---|---|
| United StatesCheapest | $1,099≈ £821 | $968.95≈ £724 |
| United Kingdom(you) | — | — |
| Europe | — | — |
| Australia | A$1,647.59≈ £846 | — |
| Singapore | — | — |
Each price is in its own currency, as the store charges it. The ≈ figures are approximate, at today's exchange rate (ECB reference rates, 2026-11-06), rounded, and leave out shipping, import duty, GST/VAT and card fees. A camera bought abroad may not carry a local warranty: see grey-market cameras before you buy.
Used: what it should be worth
We've seen used RF-S 3.9mm F3.5 STM Dual Fisheye prices on 3 days so far. A "should be worth" value appears after a week of used prices.
| Month | Cheapest | Typical | Highest | Days seen |
|---|---|---|---|---|
| Nov 2026 | £1,238 | £1,238 | £1,238 | 2 |
| Oct 2026 | £1,238 | £1,238 | £1,238 | 1 |
From used and refurbished asking prices at the stores we track, checked every few hours. Confirmed eBay sale prices will be added once eBay grants us access to its sold-listings data.
Videos
Reviews, comparisons and sample footage of the RF-S 3.9mm F3.5 STM Dual Fisheye, on YouTube.
Discussions & forums
What owners say about the RF-S 3.9mm F3.5 STM Dual Fisheye elsewhere, and here.
On CamCompare
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Comments are members' own opinions, not CamCompare's. Votes never change the order of prices.
RF-S 3.9mm F3.5 STM Dual Fisheye specifications
Optics
- Focal length
- 3.9mm
- 35mm equivalent
- 6mm equivalent
- Maximum aperture
- f/3.5
- Minimum aperture
- f/16
- Made for
- APS-C
- Elements / groups
- 11 / 8
- Aperture blades
- 7
- Closest focus
- 0.20 m
- Max magnification
- 0.03×
Focus & handling
- Autofocus
- Yes (STM)
- Optical stabilisation
- No
- Weather sealed
- No
- Internal zoom
- —
- Aperture ring
- No
- Teleconverter compatible
- No
Size & weight
- Weight
- 290 g
- Diameter × length
- —
- Filter thread
- —
Cameras it fits
All 7 →
Canon
EOS R50 V
APS-C · 24.2 MP · 2025
- 4K 60p
- 15 fps
Canon
EOS R100
APS-C · 24.1 MP · 2023
- 4K 25p
- 356 g
RED
KOMODO-X
Super 35 · 19.9 MP · 2023
- 6K video
- 1,188 g
Canon
EOS R50
APS-C · 24.2 MP · 2023
- 4K 30p
- 15 fps
Canon
EOS R10
APS-C · 24.2 MP · 2022
- 4K 60p
- 23 fps
Canon
EOS R7
APS-C · 32.5 MP · 2022
- IBIS
- 4K 60p
An APS-C lens also mounts on full-frame bodies of the same mount, where it crops the frame; those aren't listed.