Canon
EOS R 2018
Best for Entry to full-frame mirrorless & RF lens exploration
£799
list price · used from £400 at eBay
Decision tools · Compare
EOS R vs A7 III
Quick take: The EOS R has the highest resolution at 30MP; the EOS R is the most affordable.
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.
Price buttons are affiliate links — GearFrame may earn a commission at no extra cost to you. It never affects a score. Learn more
Verdictwhich should you buy?
EOS R — Entry To Full-Frame Mirrorless & Rf Lens Exploration: The RF mount's founding camera — 30MP, Dual Pixel CMOS AF, and the proof-of-concept that launched Canon's mirrorless era.
A7 III — All-Round Photography & Video: Still one of the best all-round cameras money can buy — particularly strong used. The A7 III proved that full-frame doesn't have to mean compromises, and nothing at this price point has meaningfully beaten it.
Who should buy what
EOS R (2018)
is the right camera for you if…
- Canon DSLR users wanting to enter the RF ecosystem at the lowest full-frame price
- EF lens collectors who want an affordable RF body to use with the EF-RF adapter
- Photographers stepping up from APS-C who want full-frame quality on a budget
- RF system fans who want a second body without full EOS R6 pricing
A7 III (2018)
is the right camera for you if…
- Enthusiast photographers upgrading from APS-C for the first time
- Working photographers who need reliable AF and weather sealing
- Anyone who shoots in low light regularly
- Hybrid shooters needing both stills and video performance
Full specificationsthe better value in each row is highlighted
| Specification | EOS RCanon · 2018 | A7 IIISony · 2018 |
|---|---|---|
| Price | £799Best | £1,099 |
| Sensor | 30.3MP full-frame CMOS | 24.2MP Full-Frame Exmor R BSI CMOS |
| Resolution | 30.3MPBest | 24.2MP |
| Video | 4K/30p (1.7× crop), 1080p/60p | 4K/30p (6K oversampled), 1080p/120p slow-motion |
| Autofocus | Dual Pixel CMOS AF — 5655 AF areas, Eye AF | Phase-detect, 693 points, real-time Eye AF & animal AF |
| Stabilisation | No stabilisation | 5-axis IBIS, 5 stops |
| Burst Rate | 8fps continuous (5fps with AF/AE) | 10fps with AF/AE trackingBest |
| Battery Life | ~350 shots (CIPA) | ~710 shots (CIPA)Best |
| Weight | 660g (body only) | 565g (body only)Best |
| Dimensions | 135.8 × 98.3 × 84.4mm | 126.9 × 95.6 × 73.7mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 3.69M dots, 0.71× magnification | EVF, 2.36M dots, 0.78× magnification |
| Screen | 3.0" touchscreen, fully articulating | 3.0" tilting touchscreen, 921k dots |
| Mount | Canon RF mount (full-frame) | Sony E-mount |
| Memory Cards | Single SD UHS-II slot | Dual SD (UHS-II slot 1, UHS-I slot 2) |
| Connectivity | USB-C, Bluetooth, Wi-Fi, 3.5mm mic jack | USB-C (USB 3.2), Wi-Fi, Bluetooth, NFC |
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 R
A7 III
Portrait
7.0/10
7.6/10
Street
5.8/10
6.2/10
Travel
5.5/10
6.1/10
Wedding & Events
5.7/10
7.5/10
Vlogging & Video
4.8/10
—
Filmmaking
5.7/10
6.4/10
Documentary
6.0/10
6.8/10
Sports & Action
6.3/10
7.3/10
Landscape
6.2/10
6.2/10
Wildlife
6.8/10
7.5/10
Casual
4.3/10
5.4/10
Food
6.5/10
6.6/10
Macro
5.3/10
5.8/10
Architecture
6.2/10
6.1/10
Astrophotography
6.1/10
7.4/10
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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