Sports, Travel & Dslr Shooters — Nikon D7500 (2017): The D500's BSI sensor in a compact, weather-sealed body — excellent high-ISO performance and DSLR reliability at a great price.
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
Nikon D7500 (2017)
A7S (2014)
Quick take: The nikon d7500 has the highest resolution at 21mp; the a7s is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | Nikon D7500 (2017) | A7S (2014) |
|---|---|---|
| Price | £899 | £600 |
| Sensor | 20.9MP APS-C BSI CMOS (D500 sensor) | 12.2MP Full-Frame BSI CMOS |
| Resolution | 20.9MP | 12.2MP |
| Video | 4K/30p (slight crop), FHD/60p | 1080p/60p internal, 4K via HDMI (external recorder) |
| Autofocus | Multi-CAM 3500FX II, 51 points (15 cross-type) | Phase-detect / contrast-detect hybrid AF |
| Stabilisation | None (no IBIS) | None |
| Burst Rate | 8fps mechanical | 5fps |
| Battery Life | ~950 shots (CIPA with OVF) | ~370 shots (CIPA) |
| Weight | 640g body only | 474g (with battery and card) |
| Dimensions | 135.5 × 104.0 × 72.5mm | 126.9 × 94.4 × 48.2mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | Optical pentaprism, 100% coverage, 0.94× magnification | Electronic, 2.36M dots, 0.71× magnification |
| Screen | 3.2" tilting touchscreen | 3.0" tilting LCD, 1.23M dots |
| Mount | Nikon F-mount (DX) | Sony FE (full-frame E-mount) |
| Memory Cards | Single SD UHS-II slot | Single SD / MemoryStick PRO Duo slot |
| Connectivity | USB Micro-B, Bluetooth, Wi-Fi | Multi/Micro USB, Wi-Fi, NFC |
Suitability by genre
| Genre | Nikon D7500 | A7S |
|---|---|---|
| Sports & Action | ||
| Wildlife | — | |
| Travel | ||
| Landscape | ||
| Portrait | ||
| Vlogging & Video | ||
| Astrophotography | — | |
| Street | — |
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