KFvs A7R III
Sony
A7R III (2017)
Starting from £1799 new
Best for Landscape, studio & commercial photography
View A7R III
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.
Landscape, Studio & Commercial Photography — A7R III (2017): The camera that converted professionals to mirrorless — 42MP, IBIS, and 10fps in a body that still competes today.
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
A7R III (2017)
- Landscape and studio photographers who need 42MP resolution at a used-price discount vs A7R IV
- Canon/Nikon DSLR professionals considering a mirrorless switch at a lower investment
- Commercial and product photographers who want full-frame resolution with IBIS for handheld work
- Portrait photographers who want the sharpest possible full-frame files for large print work
Quick take: The a7r iii has the highest resolution at 42mp; the kf is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | KF (2022) | A7R III (2017) |
|---|---|---|
| Price | £700 | £1,799 |
| Sensor | 24.2MP APS-C CMOS | 42.4MP full-frame BSI Exmor R CMOS |
| Resolution | 24.2MP | 42.4MP |
| Video | 1080p/60p | 4K/30p (full-frame readout), 1080p/120p |
| Autofocus | SAFOX 13 phase-detect AF with 11 points | 399 phase-detect + 425 contrast AF points — real-time Eye AF |
| Stabilisation | In-body Shake Reduction (SR II), up to 5.5 stops | 5-axis IBIS — 5.5 stops |
| Burst Rate | 6fps | 10fps with AF/AE tracking |
| Battery Life | ~410 shots (CIPA) | ~650 shots (CIPA) |
| Weight | 643g (body only) | 650g body only |
| Dimensions | 131.0 × 101.0 × 76.0mm | 126.9 × 95.6 × 73.7mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | Optical pentamirror, 0.95× magnification, ~100% coverage | EVF, 3.69M dots, 0.78× magnification |
| Screen | 3.0" fully articulating touchscreen, 1.04M dots | 3.0" touchscreen, tilting |
| Mount | Pentax KF-mount | Sony FE mount (full-frame E-mount) |
| Memory Cards | Single SD UHS-I slot | Dual SD slots (one UHS-II) |
| Connectivity | USB, Wi-Fi, Bluetooth | USB-C, Bluetooth, Wi-Fi, 3.5mm mic jack |
Suitability by genre
| Genre | KF | A7R III |
|---|---|---|
| Landscape | ||
| Travel | — | |
| Portrait | ||
| Wildlife | — | |
| Casual | — | |
| Street | ||
| Vlogging & Video | ||
| Sports & Action | — | |
| Wedding | — | |
| Sports | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
More comparisons with KF
Camera family history