EOS Rvs A7S
Canon
EOS R (2018)
Starting from £799 new
Best for Entry to full-frame mirrorless & RF lens exploration
View EOS R
GearScore™ Verdict — Which should you buy?
Entry To Full-Frame Mirrorless & Rf Lens Exploration — EOS R (2018): The RF mount's founding camera — 30MP, Dual Pixel CMOS AF, and the proof-of-concept that launched Canon's mirrorless era.
Astrophotography & Low-Light — A7S (2014): The original A7S pioneered the concept of a camera optimised entirely for low light. Its 12.2MP sensor has enormous photosites — extraordinary high-ISO performance that still holds up. Lacking IBIS and limited to 1080p internally (4K requires external recorder), it is a specialist tool. For astrophotography, event videography, or any scenario where light is genuinely scarce, it remains outstanding.
Who should buy what
EOS R (2018)
- 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
A7S (2014)
- Astrophotographers
- Low-light event videographers
- Filmmakers needing clean high-ISO footage
Quick take: The eos r has the highest resolution at 30mp; the a7s is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R (2018) | A7S (2014) |
|---|---|---|
| Price | £799 | £600 |
| Sensor | 30.3MP full-frame CMOS | 12.2MP Full-Frame BSI CMOS |
| Resolution | 30.3MP | 12.2MP |
| Video | 4K/30p (1.7× crop), 1080p/60p | 1080p/60p internal, 4K via HDMI (external recorder) |
| Autofocus | Dual Pixel CMOS AF — 5655 AF areas, Eye AF | Phase-detect / contrast-detect hybrid AF |
| Stabilisation | None | None |
| Burst Rate | 8fps continuous (5fps with AF/AE) | 5fps |
| Battery Life | ~350 shots (CIPA) | ~370 shots (CIPA) |
| Weight | 660g body only | 474g (with battery and card) |
| Dimensions | 135.8 × 98.3 × 84.4mm | 126.9 × 94.4 × 48.2mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 3.69M dots, 0.71× magnification | Electronic, 2.36M dots, 0.71× magnification |
| Screen | 3.0" touchscreen, tilting | 3.0" tilting LCD, 1.23M dots |
| Mount | Canon RF mount (full-frame) | Sony FE (full-frame E-mount) |
| Memory Cards | Single SD UHS-II slot | Single SD / MemoryStick PRO Duo slot |
| Connectivity | USB-C, Bluetooth, Wi-Fi, 3.5mm mic jack | Multi/Micro USB, Wi-Fi, NFC |
Suitability by genre
| Genre | EOS R | A7S |
|---|---|---|
| Portrait | ||
| Landscape | ||
| Travel | ||
| Wedding | — | |
| Vlogging & Video | ||
| Sports | — | |
| Astrophotography | — | |
| Street | — | |
| Sports & Action | — |
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