A7R IVvs A7S II
VS
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?
Landscape, Studio, Commercial — A7R IV (2019): 61MP in a mirrorless body — the resolution benchmark.
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
A7R IV (2019)
- Landscape photographers who print large
- Studio shooters needing maximum detail
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 a7r iv has the highest resolution at 61mp; the a7s ii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | A7R IV (2019) | A7S II (2015) |
|---|---|---|
| Price | £2,199 | £799 |
| Sensor | Full-frame BSI Exmor R CMOS 35mm | 12.1MP full-frame BSI Exmor CMOS |
| Resolution | 61.0MP | 12.1MP |
| Video | 4K 30fps | 4K/30p internal (full sensor readout), 1080p/120p, S-Log2/S-Log3 |
| Autofocus | 567-point phase-detect, real-time tracking | 169 phase-detect + 25 contrast AF — limited by modern standards |
| Stabilisation | 5-axis IBIS, 5.5 stops | 5-axis IBIS — 4.5 stops (first Sony mirrorless with IBIS) |
| Burst Rate | 10fps | 5fps continuous |
| Battery Life | 670 shots (CIPA) | ~370 shots (CIPA) |
| Weight | 665g (body only) | 584g body only |
| Dimensions | 128.9 × 96.4 × 77.5mm | 126.9 × 95.7 × 60.3mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF 0.78× 5.76M-dot | EVF, 2.36M dots, 0.71× magnification |
| Screen | 3.0" tilting touchscreen, 1.44M-dot | 3.0" tilting LCD, 1.23M dots |
| Mount | Sony E-Mount | Sony FE mount (full-frame E-mount) |
| Memory Cards | 2× SD UHS-II / CFexpress Type A | Dual SD UHS-I slots |
| Connectivity | Wi-Fi 5GHz, Bluetooth 4.1, USB-C 3.2 | USB Micro-B, Bluetooth (via app), Wi-Fi, 3.5mm mic jack |
Suitability by genre
| Genre | A7R IV | A7S II |
|---|---|---|
| Vlogging & Video | — | |
| Low Light | — | |
| Wedding | — | |
| Portrait | — | |
| Street | — | |
| Sports | — |
More comparisons with A7R IV
Camera family history