Canon RF 800mm f/11 IS STM
An unusually accessible route to 800mm: diffractive optics and a retracting barrel keep this enthusiast-tier super-tele to 1.26kg, with IS to steady the long reach. It's built for daylight birding and wildlife where the fixed f/11 aperture is a fair trade for the reach and portability. Avoid it for low-light, indoor sports, or any fast-action AF in dim conditions, where f/11 becomes the limiting factor.
Scores
BreakdownHideOverall70±3Caliber-forward blend — tier caliber + within-tier price rank 30%, value 25%, confidence 20%, compatibility 15%, upgrade path 10% — renormalized over applicable dimensions.
Scores
BreakdownHideCaliber-forward blend — tier caliber + within-tier price rank 30%, value 25%, confidence 20%, compatibility 15%, upgrade path 10% — renormalized over applicable dimensions.
The ± band on the overall score reflects sourcing confidence — wider when fewer specs are verified.
How each score is computed: our scoring methodology.
Specifications
| Spec | Value | Verification |
|---|---|---|
| mount | Canon RFSourced | Sourced |
| coverage | Full-frameSourced | Sourced |
| focal length | 800mmSourced | Sourced |
| max aperture | f/11Sourced | Sourced |
| filter thread (mm) | 95Sourced | Sourced |
| stabilized | yesSourced | Sourced |
| weight (g) | 1260Sourced | Sourced |
7/7 detail specs sourced. Amber rows are flagged for verification — we show them as reported, not confirmed.
Verdict
Best for
- Affordable 800mm reach for daylight birding/wildlife (1.26kg)
- Diffractive-optics super-tele that retracts for transport
Who should skip this
- Low light or indoor sports (fixed f/11)
- Fast-action AF in dim conditions
Where to buy
List price $1,199
Prices are a guide and can change — confirm the current price on the retailer's site before buying.
Prices last checked Jul 8, 2026 — retailer prices change often, so click through for the current price.
Some links may be affiliate links — we may earn a commission at no extra cost to you; rankings are never influenced by it.
Ecosystem
Compatibility
Built around Canon RF mount. Make sure the rest of your build uses the same platform before you buy — mismatched sockets, mounts or standards are the most common return reason. Check it in the builder →
Upgrade path
Buying today, the Sigma 15mm f/1.4 DC (APS-C, E/X/RF-S) scores higher for less — the smarter pick in lenses unless you specifically want this one. See it →