Reach is easy to buy and hard to hold still · review
Canon’s light telephoto zoom for RF bodies, reaching 400 mm with optical stabilization at about $749. Its f/8 at the long end asks for good light.
The RF 100-400mm gives Canon RF shooters 400 mm for about $749, in a 635-gram lens. For birds, sports from the stands and aircraft, reach is the first requirement.
It is f/5.6 at 100 mm and f/8 at 400 mm. The second figure is the one that counts for wildlife at dawn or dusk.
On an R50, R10 or R7, it frames like a 160-640 mm lens would on full frame. An equivalent focal length is a calculation: it describes the field of view on a full-frame camera. The focal length engraved on the lens never changes.
iPro Photo sold it at about $749. The listing has one bullet; the facts above come from it and from the product table.
Prices quoted in this text were read on November 2, 2026. The live price is at the top of the page.
| Mount | Canon RF, full frame |
|---|---|
| Focal range | 100-400 mm, a 4× zoom |
| Aperture | f/5.6 at 100 mm, f/8 at 400 mm |
| Stabilization | Optical IS |
| Autofocus | USM |
| Angle of view | 24° at the wide end, per the product table |
| Weight | 635 g (22.4 oz) |
| Amazon reference | B09G8J5WNZ |
| EAN | 4549292186765 |
In daylight, rarely. At dusk or indoors, it pushes the ISO up quickly. Canon’s RF bodies autofocus at f/8, so focus is not the issue; light is.
Yes. On an R50 or R7, its field of view narrows to roughly that of a 160-640 mm lens on full frame. An equivalent focal length is a calculation: it describes the field of view on a full-frame camera. The focal length engraved on the lens never changes.
Yes, optical IS in the lens.
At $749, it is the 3 cheapest of the 4 models in this category published here.
8.5/ 10
The affordable way to 400 mm on Canon RF, light and stabilized. Plan for its f/8 when the light fades.
photo equipment from the same category, at nearby prices. Only what all of them publish is shown: a column with holes compares nothing.
| Model | Price | Mount | Aperture | Stabilization |
|---|---|---|---|---|
| Canon RF 100-400mm F5.6-8 IS USM | $749 | Canon RF, full frame | f/5.6 at 100 mm, f/8 at 400 mm | Optical IS |
| Sony E 70-350mm G OSS | $898 | Sony E, APS-C | f/4.5 at 70 mm, f/6.3 at 350 mm | Optical SteadyShot |
| Nikon AF-S DX 55-300mm VR | $420 | Nikon F, DX (APS-C) | f/4.5 at 55 mm, f/5.6 at 300 mm | VR II, with tripod detection |
| TTARTISAN 500mm F/6.3 Manual (E) | $369 | Sony E, full frame (other mounts sold separately) | f/6.3 to f/32 | None |
This model is listed on Amazon.com, at ≈ $749 at the last reading. Listed is not the same as in stock: availability changes daily, and the buy box shows the live price.
Details checked on November 2, 2026.
Canon RF owners starting in wildlife, sports or aviation photography.
Amazon reports what buyers took in the month before this page was last checked: at least 100.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for photo equipment and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
Nikon F, DX · 55-300mm · f/4.5 at 55mm, f/5.6 at 300mm · VR II with tripod detection · 58mm filter · 4.6 ft (1.4 m) close focus · SWM
Nikon’s long-running DX telephoto zoom for F-mount DSLRs, with VR II stabilization and a 58mm filter thread, at about $420 from a camera dealer.
Best for: Nikon DX DSLR owners who want a first telephoto for sports, pets and wildlife.
≈ $420
Sony E, APS-C · 70-350mm (105-525mm equivalent, per Sony) · f/4.5 at 70mm, f/6.3 at 350mm · Optical SteadyShot · XD linear motor · 22 oz (625 g)
Sony’s APS-C super-telephoto zoom, reaching 350 mm with optical stabilization and fast linear-motor autofocus, sold by Amazon.com for about $898.
Best for: Sony APS-C owners shooting wildlife, birds and sports.
≈ $898
Sony E, full frame · 500mm prime · f/6.3 to f/32 · manual focus · two ED elements · tripod ring · 82mm filter · no stabilization
A manual-focus 500 mm prime for Sony E with a tripod ring and an 82 mm filter thread, for about $369. It has no autofocus and no stabilization, and only 8 ratings.
Best for: Patient photographers on a tripod: the Moon, distant landscapes, perched birds.
≈ $369
