PowerShot G7X Mark IIIvs A7S
Canon
PowerShot G7X Mark III (2019)
Starting from £749 new
Best for Vlogging, content creation & travel video
View PowerShot G7X Mark III
GearScore™ Verdict — Which should you buy?
Vlogging, Content Creation & Travel Video — PowerShot G7X Mark III (2019): The finest vlogging compact available — pocket-sized 4K, a flip screen, mic input, and USB live streaming in one remarkably capable package.
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
PowerShot G7X Mark III (2019)
- Vloggers and content creators who need 4K video, a flip screen, and a mic input in a pocket-sized camera
- Travellers who want the best possible compact video quality without carrying an interchangeable-lens system
- Live streamers who want USB streaming capability built into a compact camera
- Smartphone upgraders who want significantly better video quality in something nearly as pocketable
A7S (2014)
- Astrophotographers
- Low-light event videographers
- Filmmakers needing clean high-ISO footage
Quick take: The powershot g7x mark iii has the highest resolution at 20mp; the a7s is the most affordable; only the a7s is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | PowerShot G7X Mark III (2019) | A7S (2014) |
|---|---|---|
| Price | £749 | £600 |
| Sensor | 20.1MP 1-inch BSI-CMOS | 12.2MP Full-Frame BSI CMOS |
| Resolution | 20.1MP | 12.2MP |
| Video | 4K/30p, 1080p/120p — no crop in 4K | 1080p/60p internal, 4K via HDMI (external recorder) |
| Autofocus | Dual Pixel CMOS AF — fast, reliable, with Eye AF | Phase-detect / contrast-detect hybrid AF |
| Stabilisation | Optical IS — lens-based | None |
| Burst Rate | 20fps (with fixed AF/AE) | 5fps |
| Battery Life | ~235 shots (CIPA) | ~370 shots (CIPA) |
| Weight | 304g | 474g (with battery and card) |
| Dimensions | 105.5 × 60.9 × 41.4mm | 126.9 × 94.4 × 48.2mm |
| Weather Sealed | No | Yes |
| Viewfinder | None | Electronic, 2.36M dots, 0.71× magnification |
| Screen | 3.0" fully tilting touchscreen (180° flip for self-facing) | 3.0" tilting LCD, 1.23M dots |
| Mount | Fixed 24-100mm equivalent f/1.8-2.8 lens | Sony FE (full-frame E-mount) |
| Memory Cards | Single SD UHS-I slot | Single SD / MemoryStick PRO Duo slot |
| Connectivity | USB-C, Bluetooth, Wi-Fi, 3.5mm mic jack, USB live streaming | Multi/Micro USB, Wi-Fi, NFC |
Suitability by genre
| Genre | PowerShot G7X Mark III | A7S |
|---|---|---|
| Vlogging & Video | ||
| Travel | ||
| Street | ||
| Portrait | ||
| Landscape | ||
| Sports | — | |
| Astrophotography | — | |
| Sports & Action | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
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