Fujifilm X100VIvs Sigma fpvs A6400
Sigma
Sigma fp (2019)
From £1499
Best for Creative filmmakers & experimental photographers
View Sigma fp
Which should you buy?
Street, Travel & Everyday — Fujifilm X100VI (2024): The best fixed-lens camera ever made — 40MP, 7-stop IBIS, film simulations, and a design icon. Wildly oversubscribed for good reason.
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.
Content Creation & Vlogging — A6400 (2019): The best value APS-C Sony you can buy — especially used. Real-time Eye AF at this price point was transformative when it launched and still makes it one of the most reliable autofocus systems in the lineup.
Who should buy what
Fujifilm X100VI (2024)
- You want a single camera for travel, street, and everyday shooting
- You love the aesthetic of film simulations and analogue rendering
- You want the best compact camera that you'll actually carry with you everywhere
Sigma fp (2019)
- You're a filmmaker building a cinema rig where the smallest full-frame body is essential
- You want L-mount compatibility to pair with Sigma Art or Leica SL lenses
- You prioritise video and cinema colour over stills ergonomics and functionality
A6400 (2019)
- Vloggers and content creators who need a flip screen and reliable AF
- Photographers upgrading from a compact or smartphone
- Beginners who want room to grow into a full E-mount lens ecosystem
- Anyone prioritising autofocus performance at an accessible price
Quick take: The fujifilm x100vi has the highest resolution at 40mp; the a6400 is the most affordable; only the fujifilm x100vi is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | Fujifilm X100VI (2024) | Sigma fp (2019) | A6400 (2019) |
|---|---|---|---|
| Price | £1,499 | £1,499 | £899 |
| Sensor | 40.2MP APS-C X-Trans CMOS 5 HR | 24.6MP full-frame Bayer CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 40.2MP | 24.6MP | 24.2MP |
| Video | 6.2K/30p, 4K/60p, F-Log2 10-bit internal | 12-bit Cinema DNG RAW, 4K/24p, 1080p/120p | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Phase-detect 425 points, subject/eye tracking | Contrast-detect AF with face/eye detection | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | 7-stop IBIS | None (lens-based only) | None (no IBIS) |
| Burst Rate | 8fps mechanical, 25fps electronic | 18fps electronic | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~450 shots (CIPA) | 200 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 533g with battery and card | 422g body only | 403g (body, battery, card) |
| Dimensions | 128.0 × 74.8 × 55.3mm | 112.6 × 69.9 × 45.3mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | Yes | No | No |
| Viewfinder | Optical/EVF hybrid, 3.69M dots | None | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" tilting touchscreen | 3.15" fixed touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Fixed Fujinon 23mm f/2 (35mm equiv) | Leica L-mount | Sony E-mount |
| Memory Cards | Single SD UHS-I slot | Single SD UHS-II + CFexpress Type B (via adapter) | Single SD UHS-I |
| Connectivity | USB-C, Bluetooth, Wi-Fi | USB-C 3.1, Wi-Fi, Bluetooth | Micro-USB, Wi-Fi, Bluetooth, NFC |
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