Decision tools · Compare
Ricoh GR IV HDF vs THETA Z1 51GB
Quick take: The Ricoh GR IV HDF has the highest resolution at 26MP; the THETA Z1 51GB is the most affordable.
15 specs side by side·12 genres scored·UK prices from Wex Photo Video and Clifton Cameras
How to read this page. Highlighted cells win that row on the spec alone. Genre scores are the engine's base scores (enthusiast, photo and video); Camera Match re-weights them for your level and priorities. Price buttons are affiliate links; the price you pay is the same.
Price buttons are affiliate links — GearFrame may earn a commission at no extra cost to you. It never affects a score. Learn more
Full specificationsthe better value in each row is highlighted
| Specification | Ricoh GR IV HDFRicoh · 2025 | THETA Z1 51GBRicoh · 2019 |
|---|---|---|
| Price | £1,399 | £1,149Best |
| Sensor | 25.7MP APS-C BSI CMOS | 1" CMOS (×2) |
| Resolution | 26.0MPBest | 23.0MP |
| Video | 1080p/60p | 4K 30fps 360° |
| Autofocus | Hybrid phase/contrast-detect AF | — |
| Stabilisation | 6-stop IBIS (Shake Reduction) | Electronic |
| Burst Rate | 4fps | — |
| Battery Life | 250 shots (CIPA) | 300 shots (Ricoh)Best |
| Weight | 262g (with battery and card) | 182gBest |
| Weather Sealed | Not weather sealed | Not weather sealed |
| Viewfinder | None (optional external finder accessory) | — |
| Screen | 3.0" fixed touchscreen | — |
| Mount | Fixed 18.3mm f/2.8 lens (28mm equivalent) | Fixed dual lens (360°) |
| Memory Cards | Single microSD (UHS-I) + 53GB internal | 51 GB built in (no card slot) |
| Connectivity | USB-C, Wi-Fi, Bluetooth | — |
Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.
How they score by genreengine base scores out of 10
Genre
Ricoh GR IV HDF
THETA Z1 51GB
Portrait
4.5/10
—
Street
8.4/10
—
Travel
7.2/10
—
Wedding & Events
5.1/10
—
Documentary
5.3/10
—
Landscape
5.4/10
—
Casual
6.2/10
—
Food
6.0/10
—
Macro
4.5/10
—
Architecture
5.4/10
—
Astrophotography
4.5/10
—
Fun & simple
4.6/10
—
Scores come from the same engine as Camera Match: verified specifications weighted by what each genre needs, with documented adjustments. The product page and this table show the enthusiast base score. See how scores are calculated →
Next
More comparisons with Ricoh GR IV HDF
Camera family history