The idea is that you swap camera units according to the type of job you're doing, and the Ricoh has two to choose from straight out of the box, including an A12 50mm f/2.5 Macro fixed focal length unit and the S10 24‑72mm f/2.5-4.4 VC unit, which we've tested here. All clear? Now this is where it gets confusing. These camera units have different sized sensors. The 24-72mm unit has a 1/1.7-inch sensor while the 50mm unit offers an APS-C‑sized sensor. This makes the GXR harder to categorise and judge.



Link: TechRadar