Reasons to choose GR IV
Released in 2025, GR IV has about 361.15 mm² of sensor area, 25.7 MP effective resolution, and a 262 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Ricoh GR IV
vs Canon EOS R7
VS
Sensor area
361.15 mm²
GR IV332.27 mm²
EOS R7- Area ratio
- 1.09:1
- Absolute difference
- 28.88 mm²
- Relative difference
- 9%
The GR IV has the larger sensor area. More area usually means greater light-gathering potential, though real image quality still depends on sensor architecture and generation.
These cameras were released 3 years apart. Consider sensor generation when comparing pixel metrics.
Key specification differences
GR IVMetricEOS R7
25.7 MP
Effective pixels
32.5 MP
23.3 × 15.5
Sensor
22.3 × 14.9
3.75 µm
Pixel pitch
3.20 µm
14.05 µm²
Pixel area
10.22 µm²
7.12 MP/cm²
Pixel density
9.78 MP/cm²
1.55
Crop factor
1.61
1920 × 1080 / 60p
Maximum video
3840 × 2160 / 60p
262 g
Weight
612 g
SD UHS-I / internal storage
Storage
Dual SD UHS-II
DB-120 Li-ion battery
Battery
LP-E6NH Li-ion battery
Amber marks the value that is generally preferable in this comparison context. It is not an overall camera score.
How to choose between these cameras
The GR IV has the larger sensor area. The GR IV has the lighter body. The EOS R7 has the higher effective resolution. The GR IV is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose EOS R7
Released in 2022, EOS R7 has about 332.27 mm² of sensor area, 32.5 MP effective resolution, and a 612 g body. Use these values to narrow the field, not as an overall image-quality score.