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
Typically $1,099 new, from today's stores and the last 90 days
Best priceNew · in stock
$1,099
at Focus Camera
- Used from
- $968.95 at Focus Camera12% under new
- Used, typically
- $968.95
- Launch RRP
- $1,099Best new is 0% under
- 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.
New, it sells for $1,099 in the United States (Focus Camera); used and refurbished copies start at $968.95. It launched at $1,099.
Where to buy the RF-S 3.9mm F3.5 STM Dual Fisheye in United States
eBay.comAd
New and used, from single sellers: check condition and returns
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Amazon.comAd
Also check on Amazon: new, sold by Amazon and its sellers, the price shows there
Check Amazon at Amazon.comPaid link
Focus CameraLowest used
Open boxIn stock
Authorized dealer · Canon RF version
$968.95
25% off
$1,299Focus CameraBest price
NewIn stock
Authorized dealer · Canon RF version
$1,099
15% off
$1,299Camera Wholesalers
NewIn stock
Authorized dealer · Canon RF version
$1,099
Glazer's Camera
NewIn stock
Authorized dealer · Canon RF version
$1,099
15% off
$1,299
More used Canon RF-S 3.9mm F3.5 STM Dual Fisheye on eBayPaid linkSingle sellers, auctions included: check the listing's condition and returns.
Sorted by price, body only first, cheapest in stock first. Kits are listed apart and never counted as the body price. Some links earn us a commission. The Amazon and eBay rows above are ads; the store rows keep their price order.
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Reviews
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Expert reviews
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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.
- Used, it typically sells for about $968.95 in United States (asking prices over 21 days); today from $968.95.
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 right here in the US: about 3% under the price in Australia, the next cheapest.
Prices are in each market's own currency. Under each: ≈ in USD 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 States(you)Cheapest | $1,099 | $968.95 |
| United Kingdom | — | — |
| Europe | — | — |
| Australia | A$1,647.59≈ $1,132 | — |
| 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
Should be worth, used
$968.95
Usually $968.95 to $1,029.45 · 21 days, 24 listings
Cheapest used today
$968.95
About what it usually goes for
| Month | Cheapest | Typical | Highest | Days seen |
|---|---|---|---|---|
| Nov 2026 | $968.95 | $968.95 | $1,029.45 | 6 |
| Oct 2026 | $968.95 | $968.95 | $1,029.45 | 15 |
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.