Street & Documentary Photography With A Distinctive Aesthetic — GR IIIx HDF (2024): The GR IIIx with a built-in dream filter — for photographers who want the GR's legendary APS-C quality with an added layer of analogue magic.
Astrophotography & Low-Light — A7S (2014): The original A7S pioneered the concept of a camera optimised entirely for low light. Its 12.2MP sensor has enormous photosites — extraordinary high-ISO performance that still holds up. Lacking IBIS and limited to 1080p internally (4K requires external recorder), it is a specialist tool. For astrophotography, event videography, or any scenario where light is genuinely scarce, it remains outstanding.
Who should buy what
GR IIIx HDF (2024)
A7S (2014)
Quick take: The gr iiix hdf has the highest resolution at 24mp; the a7s is the most affordable; only the a7s is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | GR IIIx HDF (2024) | A7S (2014) |
|---|---|---|
| Price | £999 | £600 |
| Sensor | 24.2MP APS-C CMOS | 12.2MP Full-Frame BSI CMOS |
| Resolution | 24.2MP | 12.2MP |
| Video | 1920 × 1080 / 60fps | 1080p/60p internal, 4K via HDMI (external recorder) |
| Autofocus | Phase/contrast hybrid CDAF with Snap Focus | Phase-detect / contrast-detect hybrid AF |
| Stabilisation | 3-axis Shake Reduction (SR) — 4 stops | None |
| Burst Rate | 4fps continuous | 5fps |
| Battery Life | ~200 shots (CIPA) | ~370 shots (CIPA) |
| Weight | 262g body only | 474g (with battery and card) |
| Dimensions | 122.5 × 69.5 × 35.2mm | 126.9 × 94.4 × 48.2mm |
| Weather Sealed | No | Yes |
| Viewfinder | None — rear LCD only | Electronic, 2.36M dots, 0.71× magnification |
| Screen | 3.0" fixed LCD touchscreen, 1.037M dots | 3.0" tilting LCD, 1.23M dots |
| Mount | Fixed GR Lens 26.1mm f/2.8 (40mm equivalent) | Sony FE (full-frame E-mount) |
| Memory Cards | Single SD/SDHC/SDXC slot | Single SD / MemoryStick PRO Duo slot |
| Connectivity | USB-C, Wi-Fi, Bluetooth | Multi/Micro USB, Wi-Fi, NFC |
Suitability by genre
| Genre | GR IIIx HDF | A7S |
|---|---|---|
| Street | ||
| Travel | ||
| Portrait | ||
| Landscape | ||
| Sports | — | |
| Wildlife | — | |
| Astrophotography | — | |
| Vlogging & Video | — | |
| Sports & Action | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
More comparisons with GR IIIx HDF
Camera family history