EOS M3vs Pentax K-3 Mark III
Pentax
Pentax K-3 Mark III (2021)
Starting from £1699 new
Best for DSLR enthusiasts & outdoor photographers
View Pentax K-3 Mark III
GearScore™ Verdict — Which should you buy?
Casual & Everyday — EOS M3 (2015): The EOS M3 was a meaningful upgrade over the original EOS M — bringing 24MP, a tilting touchscreen, and improved Hybrid CMOS AF III. Video tops out at 1080p/30p and burst shooting is modest, but for stills photographers wanting affordable APS-C quality, the M3 is a competent used-market option.
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.
Who should buy what
EOS M3 (2015)
- Photographers who want affordable 24MP APS-C quality on a budget
- Casual shooters who want a compact EF-M camera with a tilting screen
- Users looking for an affordable entry into the Canon EF-M ecosystem
- Used-market buyers wanting a capable but inexpensive mirrorless
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
Quick take: The pentax k-3 mark iii has the highest resolution at 26mp; the eos m3 is the most affordable; only the pentax k-3 mark iii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS M3 (2015) | Pentax K-3 Mark III (2021) |
|---|---|---|
| Price | £150 | £1,699 |
| Sensor | 24.2MP APS-C CMOS | 25.7MP APS-C BSI CMOS (AA-filterless) |
| Resolution | 24.2MP | 25.7MP |
| Video | 1080p/30p | 4K/30p, 1080p/60p |
| Autofocus | Hybrid CMOS AF III (phase-detect + contrast-detect) | SAFOX 13 phase-detect, 101-point (25 cross-type) |
| Stabilisation | — | 5.5-stop 5-axis IBIS (Shake Reduction III) |
| Burst Rate | 4.2fps | 12fps |
| Battery Life | ~250 shots (CIPA) | 800 shots (CIPA) |
| Weight | 366g (body only) | 820g body only |
| Dimensions | 110.9 × 68.0 × 44.4mm | 134.5 × 103.5 × 73.5mm |
| Weather Sealed | No | Yes |
| Viewfinder | None (optional EVF-DC1 accessory) | Optical pentaprism, 100% coverage, 1.05× magnification |
| Screen | 3.0" tilting touchscreen, 1.04M dots | 3.2" tilting touchscreen |
| Mount | Canon EF-M mount | Pentax KF-mount |
| Memory Cards | Single SD UHS-I slot | Dual SD UHS-II |
| Connectivity | USB, Wi-Fi, NFC | USB-C, Wi-Fi, Bluetooth |
Suitability by genre
| Genre | EOS M3 | Pentax K-3 Mark III |
|---|---|---|
| Casual | — | |
| Travel | ||
| Portrait | ||
| Street | — | |
| Vlogging & Video | ||
| Sports & Action | ||
| Landscape | — | |
| Wildlife | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
More comparisons with EOS M3
Camera family history