Pentax K-3 Mark IIIvs A7CR
Pentax
Pentax K-3 Mark III (2021)
Starting from £1699 new
Best for DSLR enthusiasts & outdoor photographers
View Pentax K-3 Mark III
Sony
A7CR (2023)
Starting from £3099 new
Best for Travel, landscape & portrait photography with minimal kit
View A7CR
GearScore™ Verdict — Which should you buy?
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.
Travel, Landscape & Portrait Photography With Minimal Kit — A7CR (2023): The world's smallest 61MP full-frame camera — A7R V quality in a pocketable A7C body.
Who should buy what
Pentax K-3 Mark III (2021)
- DSLR photographers who want the finest APS-C optical viewfinder experience
- Outdoor and weather photographers who need robust all-weather sealing
- Pentax lens owners who want to use their existing K-mount glass
- Photographers who prefer optical viewfinders and refuse to switch to mirrorless
A7CR (2023)
- Landscape photographers who want 61MP resolution without carrying a large body
- Travel photographers who need professional image quality in the smallest possible package
- Portrait shooters who want A7R V sensor quality with the ease of the A7C form factor
- A7C owners ready for a major resolution upgrade without changing bodies
Quick take: The a7cr has the highest resolution at 61mp; the pentax k-3 mark iii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | Pentax K-3 Mark III (2021) | A7CR (2023) |
|---|---|---|
| Price | £1,699 | £3,099 |
| Sensor | 25.7MP APS-C BSI CMOS (AA-filterless) | 61.0MP full-frame BSI CMOS |
| Resolution | 25.7MP | 61.0MP |
| Video | 4K/30p, 1080p/60p | 4K/60p 10-bit, 1080p/120p — S-Log3, S-Cinetone |
| Autofocus | SAFOX 13 phase-detect, 101-point (25 cross-type) | AI subject recognition — phase-detect with human, animal, bird detection |
| Stabilisation | 5.5-stop 5-axis IBIS (Shake Reduction III) | 7-stop IBIS |
| Burst Rate | 12fps | 8fps mechanical, 15fps electronic |
| Battery Life | 800 shots (CIPA) | ~530 shots (CIPA) |
| Weight | 820g body only | 514g body only |
| Dimensions | 134.5 × 103.5 × 73.5mm | 124.0 × 71.1 × 63.4mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | Optical pentaprism, 100% coverage, 1.05× magnification | EVF 0.70× 2.36M-dot |
| Screen | 3.2" tilting touchscreen | 3.0" fully articulating touchscreen, 1.03M dots |
| Mount | Pentax KF-mount | Sony E-mount (full-frame) |
| Memory Cards | Dual SD UHS-II | Single CFexpress Type A / SD UHS-II slot |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C 3.2 Gen 2, Wi-Fi 5GHz, Bluetooth 5.0 |
Suitability by genre
| Genre | Pentax K-3 Mark III | A7CR |
|---|---|---|
| Landscape | ||
| Wildlife | — | |
| Sports & Action | — | |
| Portrait | ||
| Travel | ||
| Vlogging & Video | ||
| Street | — | |
| Sports | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
More comparisons with Pentax K-3 Mark III
Camera family history