Upgrade Guide
Pentax K-50→Pentax Pentax K-3 Mark III
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Strong upgrade
The Pentax K-3 Mark III improves across 5 key areas at a reasonable price gap. Most K-50 owners will notice the difference.
What's new in the Pentax K-3 Mark III
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Resolution26MP vs 16MP (+9MP)
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StabilisationIBIS added — significant for handheld and video
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Burst rate12fps vs 6fps
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Battery life800 shots (CIPA) vs ~410 shots (CIPA)
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Generation8 years newer (2021 vs 2013)
Suitability by genre
Base scores — computed from verified specs for an enthusiast shooting photo and video. The Upgrade Checker adjusts them for your skill level.
| Genre | K-50 | Pentax K-3 Mark III | |
|---|---|---|---|
| Portrait | +1.1 | ||
| Street | +0.1 | ||
| Travel | +0.3 | ||
| Wedding & Events | +2.3 | ||
| Documentary | +2.0 | ||
| Sports & Action | +1.5 | ||
| Landscape | +1.6 | ||
| Wildlife | +0.9 | ||
| Casual | +0.9 | ||
| Food | +1.0 | ||
| Macro | +0.6 | ||
| Architecture | +1.9 | ||
| Astrophotography | +2.2 | ||
| Filmmaking | — |
Full spec comparison
| Spec | K-50 | Pentax K-3 Mark III | |
|---|---|---|---|
| Price | — | £1,048 used | |
| Released | 2013 | 2021 | ↑ |
| Sensor | 16.3MP APS-C CMOS | 25.7MP APS-C BSI CMOS (AA-filterless) | |
| Resolution | 16MP | 26MP | ↑ |
| Video | Full HD 1080p/30 | 4K/30p, 1080p/60p | |
| Autofocus | SAFOX IX i+ phase-detect AF, 11 points (9 cross-type); contrast AF with face detection in live view | SAFOX 13 phase-detect, 101-point (25 cross-type) | |
| Stabilisation | Sensor-shift Shake Reduction | 5.5-stop 5-axis IBIS (Shake Reduction III) | |
| Burst Rate | 6fps | 12fps | ↑ |
| Battery Life | ~410 shots (CIPA) | 800 shots (CIPA) | ↑ |
| Weight | 675g (with battery) | 820g (body only) | ↓ |
| Weather Sealed | Yes | Yes | |
| Viewfinder | Pentaprism, ~100%, 0.92x | Optical pentaprism, 100% coverage, 1.05× magnification | |
| Screen | 3.0" fixed LCD, 921k dots | 3.2" fixed touchscreen | |
| Mount | Pentax K | Pentax KF-mount | |
| Memory Cards | Single SD slot | Dual SD UHS-II |
Compare side-by-side
⚖️ Compare these cameras
See K-50 and Pentax K-3 Mark III next to each other with our interactive comparison tool.
Get a personalised upgrade score
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Tell us what you shoot and we'll score the Pentax K-3 Mark III against your specific genres — not just specs.
Other upgrades from the K-50
Camera family history