PowerShot G7X Mark IIIvs A7S II
Canon
PowerShot G7X Mark III (2019)
Starting from £749 new
Best for Vlogging, content creation & travel video
View PowerShot G7X Mark III
Sony
A7S II (2015)
Starting from £799 new
Best for Low-light video, documentary & available-light filmmaking
View A7S II
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.
Low-Light Video, Documentary & Available-Light Filmmaking — A7S II (2015): A landmark in mirrorless history — the first Sony with IBIS and internal 4K, its low-light video capability still impresses today at a used-market price.
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 II (2015)
- Filmmakers and videographers who want legendary low-light performance at a used-price discount
- Documentary shooters working in unpredictable available light conditions
- A7S III shooters who want a second Sony FE body for backup or B-camera use
- Budget-conscious video producers who want full-frame 4K with S-Log at an accessible price
Quick take: The powershot g7x mark iii has the highest resolution at 20mp; the powershot g7x mark iii is the most affordable; only the a7s ii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | PowerShot G7X Mark III (2019) | A7S II (2015) |
|---|---|---|
| Price | £749 | £799 |
| Sensor | 20.1MP 1-inch BSI-CMOS | 12.1MP full-frame BSI Exmor CMOS |
| Resolution | 20.1MP | 12.1MP |
| Video | 4K/30p, 1080p/120p — no crop in 4K | 4K/30p internal (full sensor readout), 1080p/120p, S-Log2/S-Log3 |
| Autofocus | Dual Pixel CMOS AF — fast, reliable, with Eye AF | 169 phase-detect + 25 contrast AF — limited by modern standards |
| Stabilisation | Optical IS — lens-based | 5-axis IBIS — 4.5 stops (first Sony mirrorless with IBIS) |
| Burst Rate | 20fps (with fixed AF/AE) | 5fps continuous |
| Battery Life | ~235 shots (CIPA) | ~370 shots (CIPA) |
| Weight | 304g | 584g body only |
| Dimensions | 105.5 × 60.9 × 41.4mm | 126.9 × 95.7 × 60.3mm |
| Weather Sealed | No | Yes |
| Viewfinder | None | EVF, 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 mount (full-frame E-mount) |
| Memory Cards | Single SD UHS-I slot | Dual SD UHS-I slots |
| Connectivity | USB-C, Bluetooth, Wi-Fi, 3.5mm mic jack, USB live streaming | USB Micro-B, Bluetooth (via app), Wi-Fi, 3.5mm mic jack |
Suitability by genre
| Genre | PowerShot G7X Mark III | A7S II |
|---|---|---|
| Vlogging & Video | ||
| Travel | — | |
| Street | ||
| Portrait | ||
| Landscape | — | |
| Sports | ||
| Low Light | — | |
| Wedding | — |
More comparisons with PowerShot G7X Mark III
Camera family history