PowerShot G7X Mark IIvs A7S III
Canon
PowerShot G7X Mark II (2016)
Starting from £350 new
Best for Travel & Vlogging
View PowerShot G7X Mark II
Sony
A7S III (2020)
Starting from £2999 new
Best for Professional video & low-light filmmaking
View A7S III
GearScore™ Verdict — Which should you buy?
Travel & Vlogging — PowerShot G7X Mark II (2016): The G7X Mark II is one of the most popular compact cameras ever made — and for good reason. A fast f/1.8-2.8 lens, 20MP 1-inch sensor, flip-up selfie screen, and Micro USB charging combine in one of the most vlog-friendly compact cameras available. No 4K and no EVF are the main compromises, but the G7X II remains outstanding value on the used market.
Professional Video & Low-Light Filmmaking — A7S III (2020): If video is your primary discipline, the A7S III is the camera. 4K/120p at 10-bit in a weather-sealed body with a 9.44M dot EVF is an extraordinary package. The 12MP sensor isn't limiting for video — and it's usable at ISO 409,600 in a pinch.
Who should buy what
PowerShot G7X Mark II (2016)
- Vloggers and content creators who want a compact, selfie-screen camera
- Travel photographers who want 1-inch quality in a coat pocket
- Casual photographers stepping up from a smartphone
- Used-market buyers wanting G7X quality at a lower price
A7S III (2020)
- Filmmakers and videographers who need 4K/120p at 10-bit
- Event videographers who shoot in dark venues regularly
- Documentary filmmakers who need reliable AF and weather sealing
- Hybrid shooters where video is primary and stills are secondary
Quick take: The powershot g7x mark ii has the highest resolution at 20mp; the powershot g7x mark ii is the most affordable; only the a7s iii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | PowerShot G7X Mark II (2016) | A7S III (2020) |
|---|---|---|
| Price | £350 | £2,999 |
| Sensor | 20.1MP 1-inch BSI CMOS | 12.1MP Full-Frame BSI CMOS (12-bit, back-illuminated) |
| Resolution | 20.1MP | 12.1MP |
| Video | 1080p/60p | 4K/120p 10-bit, 4K/60p 10-bit S-Cinetone/S-Log3, 1080p/240p |
| Autofocus | Contrast-detect AF with face detection | Phase-detect, 759 points, real-time Eye AF (human & animal), subject recognition |
| Stabilisation | Optical IS (lens) | 5.5-stop IBIS |
| Burst Rate | 8fps | 10fps mechanical |
| Battery Life | ~265 shots (CIPA) | ~600 shots (CIPA) / ~70min continuous 4K recording |
| Weight | 319g (with battery and card) | 699g (body, battery, card) |
| Dimensions | 105.5 × 60.9 × 42.2mm | 128.9 × 96.9 × 80.8mm |
| Weather Sealed | No | Yes |
| Viewfinder | None | OLED EVF, 9.44M dots, 0.90× magnification — best EVF Sony has made |
| Screen | 3.0" flip-up touchscreen (180°), 1.04M dots | 3.0" vari-angle touchscreen, 1.44M dots |
| Mount | Fixed Canon 24-100mm f/1.8-2.8 (equivalent) | Sony E-mount |
| Memory Cards | Single SD UHS-I slot | Dual CFexpress Type A / SD UHS-II (both slots) |
| Connectivity | Micro USB, Wi-Fi, NFC, Bluetooth | USB-C (USB 3.2 Gen 2), full-size HDMI, Wi-Fi 6, Bluetooth |
Suitability by genre
| Genre | PowerShot G7X Mark II | A7S III |
|---|---|---|
| Travel | ||
| Casual | — | |
| Vlogging & Video | — | |
| Street | ||
| Portrait | ||
| Landscape | — | |
| Video | — | |
| Wildlife | — |
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