This is our standard studio scene comparison shot taken from exactly the same tripod position. Lighting: daylight simulation, >98% CRI. Crops are 100%. Ambient temperature was approximately 22°C (~72°F).
Canon PowerShot G11: Manual mode, ISO 80, Default Image Parameters,
Manual white balance, Self-Timer
Ricoh GXR/A12 50mm
4.4 MB JPEG (4288 x 2848)
3.6 MB JPEG (4416 x 3312)
Despite the G11 capturing the image on a much smaller sensor than the Ricoh GXR/A12, in good light and at base ISO there is hardly any visible difference. Both cameras deliver good detail. The G11 uses a tad more sharpening but at the same time blurs the finest low contrast detail a little more. This is likely due to a combination of noise reduction and diffraction (due to the small sensor). The tone curve and color response are very similar.