Decision tools · Compare
EOS R100 vs A1
Quick take: The A1 has the highest resolution at 50MP; the EOS R100 is the most affordable; only the A1 is weather sealed.
16 specs side by side·15 genres scored·UK prices from Wex Photo Video and Clifton Cameras
How to read this page. Highlighted cells win that row on the spec alone. Genre scores are the engine's base scores (enthusiast, photo and video); Camera Match re-weights them for your level and priorities. Price buttons are affiliate links; the price you pay is the same.
Sony
A1 2021
Best for Professional sport, wildlife, portrait & hybrid shooting
£4199
new today at Wex Photo Video
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Verdictwhich should you buy?
EOS R100 — First Camera / Beginner Photography: The R100 does the basics well at the lowest possible price point. Its main value is as a gateway into the Canon RF ecosystem — the lenses you buy now will work on any Canon body you upgrade to later. Modest ambitions, reliably met.
A1 — Professional Sport, Wildlife, Portrait & Hybrid Shooting: 50MP, 30fps, 8K — the Sony A1 is the most complete professional camera ever made.
Who should buy what
EOS R100 (2023)
is the right camera for you if…
- First-time camera buyers stepping up from a smartphone
- Students and hobbyists wanting an affordable starting point
- Anyone who wants to start investing in Canon RF glass on a budget
- Casual photographers who don't need advanced video or speed
A1 (2021)
is the right camera for you if…
- Professional photographers who need resolution and speed without compromise
- Sports and wildlife photographers demanding the absolute fastest Sony
- Studio and fashion photographers who also shoot sport or events
- A9 III or A7R V owners who want a single body that does everything
Full specificationsthe better value in each row is highlighted
| Specification | EOS R100Canon · 2023 | A1Sony · 2021 |
|---|---|---|
| Price | £559Best | £4,199 |
| Sensor | 24.1MP APS-C CMOS | 50.1MP Full-Frame Stacked BSI CMOS Exmor RS |
| Resolution | 24.1MP | 50.1MPBest |
| Video | 4K/30p (slight crop), 1080p/60p | 8K/30p, 4K/120p, 1080p/240p |
| Autofocus | Dual Pixel CMOS AF, face detection, subject tracking | Real-time Tracking, AI subject recognition — 759 phase-detect points |
| Stabilisation | No stabilisation | IBIS — up to 5.5 stops |
| Burst Rate | 6.5fps mechanical | 30fps electronic with full AF/AEBest |
| Battery Life | ~270 shots (CIPA) | ~430 shots (CIPA)Best |
| Weight | 356g (with battery and card)Best | 737g (with battery and card) |
| Dimensions | 116.3 × 85.5 × 68.8mm | 128.9 × 96.9 × 80.8mm |
| Weather Sealed | Not weather sealed | YesBest |
| Viewfinder | EVF, 2.36M dots, 0.59× magnification | EVF, 9.44M dots, 0.90× magnification, 240fps |
| Screen | 3.0" fixed LCD, 1.04M dots (no touch) | 3.0" fully tilting touchscreen |
| Mount | Canon RF-mount | Sony FE mount (full-frame E-mount) |
| Memory Cards | Single SD UHS-II | Dual CFexpress Type A / SD UHS-II |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C, Wi-Fi 5GHz, Bluetooth, Ethernet, HDMI |
Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.
How they score by genreengine base scores out of 10
Genre
EOS R100
A1
Portrait
6.2/10
8.2/10
Street
6.3/10
6.1/10
Travel
5.6/10
5.9/10
Wedding & Events
4.5/10
7.9/10
Filmmaking
4.5/10
7.8/10
Documentary
4.9/10
7.6/10
Sports & Action
5.6/10
8.8/10
Landscape
4.5/10
7.6/10
Wildlife
6.2/10
8.7/10
Casual
6.4/10
4.8/10
Food
5.1/10
7.4/10
Macro
4.4/10
7.3/10
Architecture
4.9/10
7.9/10
Astrophotography
4.2/10
6.8/10
Fun & simple
4.9/10
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Scores come from the same engine as Camera Match: verified specifications weighted by what each genre needs, with documented adjustments. The product page and this table show the enthusiast base score. See how scores are calculated →
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