X100Svs A7S III
Sony
A7S III (2020)
Starting from £2999 new
Best for Professional video & low-light filmmaking
View A7S III
GearScore™ Verdict — Which should you buy?
Street & Travel — X100S (2013): The X100S was the moment the X100 series became legendary. Dramatically faster phase-detect AF, X-Trans II image quality, Fujifilm's film simulations, and the iconic hybrid viewfinder in a pocketable fixed-lens body — the blueprint every subsequent X100 has built on. A brilliant used-market buy for street and travel photographers who want the Fujifilm experience at an accessible price.
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
X100S (2013)
- Street photographers who want the Fujifilm X100 experience on a budget
- Travel photographers who love a fixed focal length
- Film photography enthusiasts who want digital film simulations
- Used-market buyers stepping into the X100 series
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 x100s has the highest resolution at 16mp; the x100s is the most affordable; only the a7s iii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | X100S (2013) | A7S III (2020) |
|---|---|---|
| Price | £250 | £2,999 |
| Sensor | 16.3MP APS-C X-Trans CMOS II | 12.1MP Full-Frame BSI CMOS (12-bit, back-illuminated) |
| Resolution | 16.3MP | 12.1MP |
| Video | 1080p/60p | 4K/120p 10-bit, 4K/60p 10-bit S-Cinetone/S-Log3, 1080p/240p |
| Autofocus | Hybrid AF with sensor-embedded phase-detect + contrast-detect | Phase-detect, 759 points, real-time Eye AF (human & animal), subject recognition |
| Stabilisation | — | 5.5-stop IBIS |
| Burst Rate | 6fps | 10fps mechanical |
| Battery Life | ~330 shots (CIPA) | ~600 shots (CIPA) / ~70min continuous 4K recording |
| Weight | 445g (with battery and card) | 699g (body, battery, card) |
| Dimensions | 126.5 × 74.4 × 52.4mm | 128.9 × 96.9 × 80.8mm |
| Weather Sealed | No | Yes |
| Viewfinder | Hybrid optical/electronic viewfinder | OLED EVF, 9.44M dots, 0.90× magnification — best EVF Sony has made |
| Screen | 2.8" fixed LCD, 460k dots | 3.0" vari-angle touchscreen, 1.44M dots |
| Mount | Fixed Fujinon 23mm f/2 (35mm equivalent) | Sony E-mount |
| Memory Cards | Single SD UHS-I slot | Dual CFexpress Type A / SD UHS-II (both slots) |
| Connectivity | USB, Wi-Fi (via optional adapter) | USB-C (USB 3.2 Gen 2), full-size HDMI, Wi-Fi 6, Bluetooth |
Suitability by genre
| Genre | X100S | A7S III |
|---|---|---|
| Street | ||
| Travel | ||
| Casual | — | |
| Portrait | ||
| Landscape | — | |
| Vlogging & Video | — | |
| 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