The Ricoh GR IV Monochrome is 52 mm narrower, 5.9 mm shorter, 48.9 mm thinner and 133 g lighter than the Sigma dp2 Quattro.
| Sigma dp2 Quattro | Ricoh GR IV Monochrome | |
|---|---|---|
| Size (W × H × D) | 161.4 × 67 × 81.6 mm | 109.4 × 61.1 × 32.7 mm |
| Weight | 395 g | 262 g |
| Lens | Fixed lens | Fixed lens |
| Announced | 2014 | 2026 |