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Sony FX5 vs Sony RX1R III
Quick take: The Sony RX1R III has the highest resolution at 61MP; the Sony RX1R III is the most affordable; only the Sony FX5 is weather sealed.
15 specs side by side·15 genres scored·UK prices from Wex Photo Video and Clifton Cameras
How to read this page. Highlighted cells win that row on the spec alone. Genre scores are the engine's base scores (enthusiast, photo and video); Camera Match re-weights them for your level and priorities. Price buttons are affiliate links; the price you pay is the same.
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Full specificationsthe better value in each row is highlighted
| Specification | Sony FX5Sony · 2026 | Sony RX1R IIISony · 2025 |
|---|---|---|
| Price | £4,699 | £3,899Best |
| Sensor | 16.6MP full-frame stacked Exmor RS CMOS | 61MP full-frame Exmor R BSI CMOS |
| Resolution | 16.6MP | 61.0MPBest |
| Video | 5K/60p open-gate, 4K/120p, internal RAW/X-OCN, 10-bit Log, triple base ISO | 4K/30p, 10-bit |
| Autofocus | AI-powered hybrid phase-detect AF (759 points) with subject tracking | Hybrid phase-detect AF (693 points) with eye detection |
| Stabilisation | IBIS with Dynamic Active Mode | No stabilisation |
| Burst Rate | 10fpsBest | 5fps |
| Battery Life | ~105 min actual recording, ~170 min continuous (LCD) | 300 shots (CIPA, LCD)Best |
| Weight | 734g (with battery and card) | 496g (with battery and card)Best |
| Weather Sealed | YesBest | Not weather sealed |
| Viewfinder | Optional detachable EVF (DVF-EL1), OLED | EVF, 2.36M dots |
| Screen | Fully articulating touchscreen (4-axis arm) | Tilting touchscreen |
| Mount | Sony E-mount | Fixed 35mm f/2 Zeiss Sonnar lens |
| Memory Cards | CFexpress Type A + SDXC (dual) | Single SD (UHS-II) |
| Connectivity | USB-C, full-size HDMI, Wi-Fi, Bluetooth | USB-C, Wi-Fi, Bluetooth |
Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.
How they score by genreengine base scores out of 10
Genre
Sony FX5
Sony RX1R III
Portrait
6.9/10
5.9/10
Street
5.3/10
7.6/10
Travel
6.2/10
6.1/10
Wedding & Events
7.0/10
5.7/10
Vlogging & Video
6.1/10
—
Filmmaking
8.7/10
5.3/10
Documentary
8.3/10
5.5/10
Sports & Action
6.8/10
—
Landscape
5.1/10
5.7/10
Wildlife
6.8/10
—
Casual
5.1/10
4.6/10
Food
7.4/10
6.3/10
Macro
5.2/10
4.8/10
Architecture
6.1/10
6.0/10
Astrophotography
6.7/10
6.2/10
Scores come from the same engine as Camera Match: verified specifications weighted by what each genre needs, with documented adjustments. The product page and this table show the enthusiast base score. See how scores are calculated →
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