KFvs A6400
GearScore™ Verdict — Which should you buy?
Landscape & Outdoor — KF (2022): The Pentax KF is a rare thing — a weather-sealed DSLR with in-body stabilisation and an articulating screen at an accessible price. Video is modest at 1080p/60p, but for outdoor and landscape photographers who prefer optical viewfinders and want real weather sealing, the KF delivers in a format that is increasingly hard to find.
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
KF (2022)
- Outdoor and landscape photographers who want weather sealing at an accessible price
- DSLR users who want IBIS and an articulating screen without switching systems
- Pentax K-mount lens collectors who want a modern body for their glass
- Photographers who prefer the natural feel of an optical viewfinder
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 kf is the most affordable; only the kf is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | KF (2022) | A6400 (2019) |
|---|---|---|
| Price | £700 | £899 |
| Sensor | 24.2MP APS-C CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 24.2MP | 24.2MP |
| Video | 1080p/60p | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | SAFOX 13 phase-detect AF with 11 points | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | In-body Shake Reduction (SR II), up to 5.5 stops | None (no IBIS) |
| Burst Rate | 6fps | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~410 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 643g (body only) | 403g (body, battery, card) |
| Dimensions | 131.0 × 101.0 × 76.0mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | Yes | No |
| Viewfinder | Optical pentamirror, 0.95× magnification, ~100% coverage | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" fully articulating touchscreen, 1.04M dots | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Pentax KF-mount | Sony E-mount |
| Memory Cards | Single SD UHS-I slot | Single SD UHS-I |
| Connectivity | USB, Wi-Fi, Bluetooth | Micro-USB, Wi-Fi, Bluetooth, NFC |
Suitability by genre
| Genre | KF | A6400 |
|---|---|---|
| Landscape | — | |
| Travel | ||
| Portrait | ||
| Wildlife | ||
| Casual | — | |
| Street | ||
| Vlogging & Video | — | |
| Sports & Action | — | |
| Video | — |
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