Decision tools · Compare
A5100 vs Sony RX1R III
Quick take: The Sony RX1R III has the highest resolution at 61MP; the A5100 is the most affordable.
16 specs side by side·16 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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Verdictwhich should you buy?
A5100 — Casual & Travel: The A5100 is one of the smallest APS-C mirrorless cameras ever made. Its 24MP sensor, phase-detect AF, and selfie-friendly flip screen pack remarkable capability into a shirt-pocket-sized body. No EVF or hot shoe limits it for serious use, but as a compact travel camera or beginner's first mirrorless, it punches well above its price on the used market.
Who should buy what
A5100 (2014)
is the right camera for you if…
- Beginners stepping up from a smartphone
- Compact travel photographers
- Casual vloggers who want APS-C quality
Full specificationsthe better value in each row is highlighted
| Specification | A5100Sony · 2014 | Sony RX1R IIISony · 2025 |
|---|---|---|
| Price | £200Best | £3,899 |
| Sensor | 24.3MP APS-C Exmor CMOS | 61MP full-frame Exmor R BSI CMOS |
| Resolution | 24.3MP | 61.0MPBest |
| Video | 1080p/60p | 4K/30p, 10-bit |
| Autofocus | Hybrid phase-detect / contrast-detect AF, face detection | Hybrid phase-detect AF (693 points) with eye detection |
| Stabilisation | No stabilisation | No stabilisation |
| Burst Rate | 6fpsBest | 5fps |
| Battery Life | ~400 shots (CIPA)Best | 300 shots (CIPA, LCD) |
| Weight | 224g (body only)Best | 496g (with battery and card) |
| Dimensions | 109.6 × 62.8 × 35.7mm | — |
| Weather Sealed | Not weather sealed | Not weather sealed |
| Viewfinder | No viewfinder | EVF, 2.36M dots |
| Screen | 3.0" flip-up touchscreen, 921k dots | Tilting touchscreen |
| Mount | Sony E-mount | Fixed 35mm f/2 Zeiss Sonnar lens |
| Memory Cards | Single SD / MemoryStick PRO Duo slot | Single SD (UHS-II) |
| Connectivity | Micro USB, Wi-Fi, NFC | 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
A5100
Sony RX1R III
Portrait
5.4/10
5.9/10
Street
7.0/10
7.6/10
Travel
6.7/10
6.1/10
Wedding & Events
3.5/10
5.7/10
Vlogging & Video
5.0/10
—
Documentary
4.1/10
5.5/10
Sports & Action
4.7/10
—
Landscape
5.0/10
5.7/10
Wildlife
5.5/10
—
Casual
5.1/10
4.6/10
Food
5.9/10
6.3/10
Macro
5.2/10
4.8/10
Architecture
5.2/10
6.0/10
Astrophotography
4.7/10
6.2/10
Fun & simple
4.5/10
—
Filmmaking
—
5.3/10
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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