Upgrade Guide
Ricoh GR IIIx HDF→Ricoh THETA Z1 51GB
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Situational
One clear hardware improvement over the GR IIIx HDF. Worth it if that specific upgrade aligns with what you shoot.
What's new in the THETA Z1 51GB
-
Battery life300 shots (Ricoh) vs ~200 shots (CIPA)
Unchanged or similar
-
ResolutionSimilar (23MP)
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 | GR IIIx HDF | THETA Z1 51GB | |
|---|---|---|---|
| Portrait | — | ||
| Street | — | ||
| Travel | -1.9 | ||
| Wedding & Events | — | ||
| Documentary | -0.7 | ||
| Landscape | -0.2 | ||
| Casual | — | ||
| Food | — | ||
| Macro | — | ||
| Architecture | — | ||
| Astrophotography | — | ||
| Fun & simple | — | ||
| Vlogging & Video | — | ||
| Filmmaking | — |
Full spec comparison
| Spec | GR IIIx HDF | THETA Z1 51GB | |
|---|---|---|---|
| Price | £999 | £1,149 | |
| Released | 2024 | 2019 | ↓ |
| Sensor | 24.2MP APS-C CMOS | 1" CMOS (×2) | |
| Resolution | 24MP | 23MP | ↓ |
| Video | 1920 × 1080 / 60fps | 4K 30fps 360° | |
| Autofocus | Phase/contrast hybrid CDAF with Snap Focus | — | |
| Stabilisation | 3-axis Shake Reduction (SR) — 4 stops | Electronic | |
| Burst Rate | 4fps continuous | — | |
| Battery Life | ~200 shots (CIPA) | 300 shots (Ricoh) | ↑ |
| Weight | 262g (body only) | 182g | ↑ |
| Weather Sealed | Not weather sealed | Not weather sealed | |
| Viewfinder | None — rear LCD only | — | |
| Screen | 3.0" fixed LCD touchscreen, 1.037M dots | — | |
| Mount | Fixed GR Lens 26.1mm f/2.8 (40mm equivalent) | Fixed dual lens (360°) | |
| Memory Cards | Single SD/SDHC/SDXC slot | 51 GB built in (no card slot) |
Compare side-by-side
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Get a personalised upgrade score
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Tell us what you shoot and we'll score the THETA Z1 51GB against your specific genres — not just specs.
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