EOS R100vs A7R
Canon
EOS R100 (2023)
Starting from £529 new
Best for First camera / beginner photography
View EOS R100
GearScore™ Verdict — Which should you buy?
First Camera / Beginner Photography — EOS R100 (2023): 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.
Studio, Tripod Landscape & Camera History — A7R (2013): The world's first 36MP full-frame mirrorless — a landmark camera that launched the A7R series, despite contrast-detect AF and significant shutter shock limitations.
Who should buy what
EOS R100 (2023)
- 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
A7R (2013)
- Collectors and photographers interested in the camera that started the A7R lineage
- Studio photographers who work on a tripod and can manage contrast-detect AF
- Landscape photographers who prioritise resolution over autofocus performance
- Sony FE system users who want a historical body at a very low used price
Quick take: The a7r has the highest resolution at 36mp; the a7r is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R100 (2023) | A7R (2013) |
|---|---|---|
| Price | £529 | £349 |
| Sensor | 24.1MP APS-C CMOS | 36.4MP Full-Frame CMOS (no OLPF) |
| Resolution | 24.1MP | 36.4MP |
| Video | 4K/30p (slight crop), 1080p/60p | 1080p/60p |
| Autofocus | Dual Pixel CMOS AF, face detection, subject tracking | Contrast-detect AF only (no phase-detect on sensor) |
| Stabilisation | None (no IBIS) | None |
| Burst Rate | 6.5fps mechanical | 4fps |
| Battery Life | ~270 shots (CIPA) | ~340 shots (CIPA) |
| Weight | 356g (body, battery, card) | 465g (with battery and card) |
| Dimensions | 116.3 × 85.5 × 68.8mm | 126.9 × 94.4 × 48.2mm |
| Weather Sealed | No | No |
| Viewfinder | EVF, 2.36M dots, 0.59× magnification | EVF, OLED 2.36M dots, 0.71× magnification |
| Screen | 3.0" fixed touchscreen, 1.04M dots | 3.0" fixed LCD, 1.23M dots (no tilt, no touch) |
| Mount | Canon RF-mount | Sony FE (full-frame E-mount) |
| Memory Cards | Single SD UHS-II | Single SD UHS-I slot |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB, Wi-Fi, NFC |
Suitability by genre
| Genre | EOS R100 | A7R |
|---|---|---|
| Portrait | ||
| Travel | ||
| Street | — | |
| Video | — | |
| Wildlife | — | |
| Landscape | — | |
| Architecture | — | |
| Sports & Action | — | |
| Vlogging & Video | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
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Camera family history