Sigma fpvs A7S
Sigma
Sigma fp (2019)
Starting from £1499 new
Best for Creative filmmakers & experimental photographers
View Sigma fp
GearScore™ Verdict — Which should you buy?
Creative Filmmakers & Experimental Photographers — Sigma fp (2019): The smallest full-frame camera in the world — Cinema DNG RAW and L-mount flexibility in a pocket-sized body that rewards creative shooters.
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
Sigma fp (2019)
- Filmmakers who want the world's smallest full-frame camera as a B or C camera
- Experimental photographers who want to build a unique, modular setup
- L-mount photographers who want an ultra-compact full-frame body
- Anyone who wants a conversation-starting camera that delivers serious results
A7S (2014)
- Astrophotographers
- Low-light event videographers
- Filmmakers needing clean high-ISO footage
Quick take: The sigma fp has the highest resolution at 25mp; the a7s is the most affordable; only the a7s is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | Sigma fp (2019) | A7S (2014) |
|---|---|---|
| Price | £1,499 | £600 |
| Sensor | 24.6MP full-frame Bayer CMOS | 12.2MP Full-Frame BSI CMOS |
| Resolution | 24.6MP | 12.2MP |
| Video | 12-bit Cinema DNG RAW, 4K/24p, 1080p/120p | 1080p/60p internal, 4K via HDMI (external recorder) |
| Autofocus | Contrast-detect AF with face/eye detection | Phase-detect / contrast-detect hybrid AF |
| Stabilisation | None (lens-based only) | None |
| Burst Rate | 18fps electronic | 5fps |
| Battery Life | 200 shots (CIPA) | ~370 shots (CIPA) |
| Weight | 422g body only | 474g (with battery and card) |
| Dimensions | 112.6 × 69.9 × 45.3mm | 126.9 × 94.4 × 48.2mm |
| Weather Sealed | No | Yes |
| Viewfinder | None | Electronic, 2.36M dots, 0.71× magnification |
| Screen | 3.15" fixed touchscreen | 3.0" tilting LCD, 1.23M dots |
| Mount | Leica L-mount | Sony FE (full-frame E-mount) |
| Memory Cards | Single SD UHS-II + CFexpress Type B (via adapter) | Single SD / MemoryStick PRO Duo slot |
| Connectivity | USB-C 3.1, Wi-Fi, Bluetooth | Multi/Micro USB, Wi-Fi, NFC |
Suitability by genre
| Genre | Sigma fp | A7S |
|---|---|---|
| Vlogging & Video | ||
| Street | ||
| Travel | ||
| Portrait | ||
| Landscape | ||
| Sports & Action | ||
| Astrophotography | — |
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