Fujifilm X100VIvs Pentax K-3 Mark IIIvs A6400
Pentax
Pentax K-3 Mark III (2021)
From £1699
Best for DSLR enthusiasts & outdoor photographers
View Pentax K-3 Mark III
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.
Dslr Enthusiasts & Outdoor Photographers — Pentax K-3 Mark III (2021): The finest APS-C DSLR ever made — class-leading weather sealing, optical viewfinder, 5-axis IBIS, and extraordinary build for photographers committed to DSLR.
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
Pentax K-3 Mark III (2021)
- You're a committed DSLR photographer with significant investment in Pentax glass
- You shoot in extreme weather conditions and place build quality and reliability above everything
- You prefer optical viewfinder performance and want the best modern APS-C DSLR available
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, pentax k-3 mark iii are weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | Fujifilm X100VI (2024) | Pentax K-3 Mark III (2021) | A6400 (2019) |
|---|---|---|---|
| Price | £1,499 | £1,699 | £899 |
| Sensor | 40.2MP APS-C X-Trans CMOS 5 HR | 25.7MP APS-C BSI CMOS (AA-filterless) | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 40.2MP | 25.7MP | 24.2MP |
| Video | 6.2K/30p, 4K/60p, F-Log2 10-bit internal | 4K/30p, 1080p/60p | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Phase-detect 425 points, subject/eye tracking | SAFOX 13 phase-detect, 101-point (25 cross-type) | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | 7-stop IBIS | 5.5-stop 5-axis IBIS (Shake Reduction III) | None (no IBIS) |
| Burst Rate | 8fps mechanical, 25fps electronic | 12fps | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~450 shots (CIPA) | 800 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 533g with battery and card | 820g body only | 403g (body, battery, card) |
| Dimensions | 128.0 × 74.8 × 55.3mm | 134.5 × 103.5 × 73.5mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | Yes | Yes | No |
| Viewfinder | Optical/EVF hybrid, 3.69M dots | Optical pentaprism, 100% coverage, 1.05× magnification | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" tilting touchscreen | 3.2" tilting touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Fixed Fujinon 23mm f/2 (35mm equiv) | Pentax KF-mount | Sony E-mount |
| Memory Cards | Single SD UHS-I slot | Dual SD UHS-II | Single SD UHS-I |
| Connectivity | USB-C, Bluetooth, Wi-Fi | USB-C, Wi-Fi, Bluetooth | Micro-USB, Wi-Fi, Bluetooth, NFC |
Compare pairs from this group