Upgrade Guide
Pentax WG-90→Pentax Pentax K-3 Mark III
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Worthwhile
Clear improvements over the WG-90. Whether it justifies the cost depends on which upgrades matter most to your shooting.
What's new in the Pentax K-3 Mark III
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Resolution26MP vs 16MP (+10MP)
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StabilisationIBIS added — significant for handheld and video
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Burst rate12fps vs 1fps
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Battery life800 shots (CIPA) vs 260 shots (CIPA, estimated)
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 | WG-90 | Pentax K-3 Mark III | |
|---|---|---|---|
| Portrait | +3.4 | ||
| Street | -0.4 | ||
| Travel | -0.6 | ||
| Wedding & Events | +4.5 | ||
| Documentary | +2.1 | ||
| Landscape | +2.4 | ||
| Casual | -1.3 | ||
| Food | +1.9 | ||
| Macro | +1.9 | ||
| Architecture | +3.0 | ||
| Astrophotography | +4.2 | ||
| Underwater | — | ||
| Fun & simple | — | ||
| Filmmaking | — | ||
| Sports & Action | — | ||
| Wildlife | — |
Full spec comparison
| Spec | WG-90 | Pentax K-3 Mark III | |
|---|---|---|---|
| Price | £379 | £1,699 | |
| Released | 2024 | 2021 | ↓ |
| Sensor | 16MP 1/2.3-inch BSI CMOS | 25.7MP APS-C BSI CMOS (AA-filterless) | |
| Resolution | 16MP | 26MP | ↑ |
| Video | 1080p/30p | 4K/30p, 1080p/60p | |
| Autofocus | Contrast-detect AF | SAFOX 13 phase-detect, 101-point (25 cross-type) | |
| Stabilisation | No stabilisation | 5.5-stop 5-axis IBIS (Shake Reduction III) | |
| Burst Rate | 1fps | 12fps | ↑ |
| Battery Life | 260 shots (CIPA, estimated) | 800 shots (CIPA) | ↑ |
| Weight | 194g (with battery and card) | 820g (body only) | ↓ |
| Weather Sealed | Yes | Yes | |
| Viewfinder | None (screen only) | Optical pentaprism, 100% coverage, 1.05× magnification | |
| Screen | Fixed screen, no touch | 3.2" fixed touchscreen | |
| Mount | Fixed 5x zoom lens (28-140mm equivalent) | Pentax KF-mount | |
| Memory Cards | Single SD | Dual SD UHS-II |
Compare side-by-side
⚖️ Compare these cameras
See WG-90 and Pentax K-3 Mark III next to each other with our interactive comparison tool.
Get a personalised upgrade score
Run the upgrade checker →
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 WG-90
Camera family history