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SLT-A99 vs RX100 III
Quick take: The SLT-A99 has the highest resolution at 24MP; the SLT-A99 is the most affordable.
16 specs side by side·14 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 | SLT-A99Sony · 2012 | RX100 IIISony · 2014 |
|---|---|---|
| Price | £454 used | £275 usedBest |
| Sensor | 24.3MP full-frame sensor | 20.1MP 1-inch CMOS |
| Resolution | 24.3MPBest | 20.1MP |
| Video | Full HD 1080p/60 | Full HD 1080p/60 (XAVC S) |
| Autofocus | 19-point phase-detect (11 cross) via the translucent mirror + 102-point on-sensor phase assist, face detection | 25-point contrast-detect AF, Eye AF, Lock-on AF |
| Stabilisation | 4.5-stop sensor-shift SteadyShot INSIDE | Optical SteadyShot (in the lens), no IBIS |
| Burst Rate | 6fps with continuous AF (10fps in crop mode) | 10fps (2.9fps with AF-S per frame)Best |
| Battery Life | ~500 shots (CIPA)Best | ~320 shots (CIPA) |
| Weight | 812g (with battery and card) | 290g (with battery and card)Best |
| Dimensions | 147 × 111.2 × 78.4mm | 101.6 × 58.1 × 41mm |
| Weather Sealed | Not weather sealed | Not weather sealed |
| Viewfinder | OLED EVF, 2.36M dots, 100%, 0.71x | Pop-up OLED EVF, 1.44M dots |
| Screen | 3.0" three-way tilting / swivel LCD, 1.23M dots | 3.0" LCD, 1.23M dots, tilts 180° up |
| Mount | Sony A-mount | Fixed Zeiss Vario-Sonnar T* 24-70mm f/1.8-2.8 |
| Memory Cards | Dual slots: SD / Memory Stick + SD | Single SD / Memory Stick slot |
| Connectivity | Micro USB, HDMI, 3.5mm mic + headphone, remote terminal, Multi Interface Shoe | Multi / micro USB, micro HDMI, Wi-Fi, NFC |
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
SLT-A99
RX100 III
Portrait
6.4/10
4.0/10
Street
5.3/10
7.1/10
Travel
4.7/10
6.4/10
Wedding & Events
6.0/10
2.5/10
Vlogging & Video
4.0/10
—
Documentary
4.6/10
3.3/10
Sports & Action
5.2/10
—
Landscape
5.2/10
4.2/10
Wildlife
5.1/10
—
Casual
3.4/10
4.1/10
Food
5.6/10
4.4/10
Macro
4.4/10
3.4/10
Architecture
5.5/10
4.3/10
Astrophotography
5.5/10
2.9/10
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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