Decision tools · Compare
Pentax K-1 Mark II vs A6400
Quick take: The Pentax K-1 Mark II has the highest resolution at 36MP; the A6400 is the most affordable.
16 specs side by side·15 genres scored·UK prices from Wex Photo Video and Clifton Cameras
How to read this page. Highlighted cells win that row on the spec alone. Genre scores are the engine's base scores (enthusiast, photo and video); Camera Match re-weights them for your level and priorities. Price buttons are affiliate links; the price you pay is the same.
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Verdictwhich should you buy?
A6400 — Content Creation & Vlogging: 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
A6400 (2019)
is the right camera for you if…
- 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
Full specificationsthe better value in each row is highlighted
| Specification | Pentax K-1 Mark IIPentax · 2018 | A6400Sony · 2019 |
|---|---|---|
| Price | £1,899 | £749Best |
| Sensor | 36.4MP full-frame CMOS (no AA filter) | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 36.4MPBest | 24.2MP |
| Video | 1080p only, no 4K | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | SAFOX 12, 33-point DSLR phase-detect AF | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | 5-axis Shake Reduction II (in-body) | No stabilisation |
| Burst Rate | 4.4fps | 11fps mechanical, 8fps with AF trackingBest |
| Battery Life | 670 shots (CIPA)Best | ~410 shots (CIPA) |
| Weight | 1010g (with battery and card) | 403g (with battery and card)Best |
| Dimensions | — | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | Optical pentaprism, 0.7x magnification, 100% coverage | EVF, 2.36M dots, 0.70× magnification |
| Screen | Multi-axis tilting screen (up/down/side), no touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Pentax KAF2 (K-mount) | Sony E-mount |
| Memory Cards | Dual SD (UHS-I) | Single SD UHS-I |
| Connectivity | USB, HDMI, Wi-Fi | Micro-USB, Wi-Fi, Bluetooth, NFC |
Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.
How they score by genreengine base scores out of 10
Genre
Pentax K-1 Mark II
A6400
Portrait
6.7/10
6.7/10
Street
4.9/10
7.3/10
Travel
5.0/10
6.9/10
Wedding & Events
6.7/10
5.6/10
Documentary
5.5/10
6.1/10
Sports & Action
5.3/10
6.9/10
Landscape
7.0/10
5.6/10
Wildlife
5.6/10
7.4/10
Casual
3.3/10
5.8/10
Food
6.0/10
6.1/10
Macro
5.3/10
5.2/10
Architecture
6.9/10
5.5/10
Astrophotography
7.3/10
6.0/10
Vlogging & Video
—
6.0/10
Filmmaking
—
5.1/10
Scores come from the same engine as Camera Match: verified specifications weighted by what each genre needs, with documented adjustments. The product page and this table show the enthusiast base score. See how scores are calculated →
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