|Lens mount||Ricoh GXR lens/sensor|
|Image sensor type||Varies (CCD in S10; CMOS in P10, A12 and A16 modules)|
|Image sensor size||Varies (1/2.3″ in P10, 1/1.7″ in S10, APS-C in A12 and A16)|
|Maximum resolution||Varies (10MP in P10 and S10; 12MP in A12; 16MP in A16)|
|Shutter||leaf (A12, A16, P10, S10) or focal plane (GXR Mount)|
|Image processor||Varies (GR ENGINE III or Smooth Imaging Engine IV)|
|Rear LCD monitor||3 inches (7.6 cm); 920,000 pixels|
|Battery||Ricoh DB-90 3.6V|
|AV Port(s)||HDMI, USB|
|Body composition or special features||magnesium alloy|
|Dimensions||113.9 by 70.2 by 37.5 millimetres (4.5 in × 2.8 in × 1.5 in) (body only, excluding projections)|
|Weight||160 grams (6 oz) (body only, excluding battery, memory card, strap)|
The Ricoh GXR is a compact digital camera unlike conventional cameras which either have a fixed lens and sensor or interchangeable lens and a fixed sensor, the GXR takes interchangeable units, each housing a lens, sensor and image processing engine. This allows each unit to have these features optimised to one another and a specific task, whereas with conventional interchangeable lens cameras, each different lens must use the same sensor and engine. The sealed units also prevent dust from reaching the sensor, which can be a problem with other cameras where the sensor is exposed whilst a lens is being changed. A significant disadvantage of this system is the extra cost involved in having to buy a whole new sensor with every new lens.
The body holds a built-in pop-up flash as well as a hot shoe on top for an external flash unit. Alternatively, Ricoh’s ‘VF-2’, an external electronic viewfinder, can be attached to the hot shoe which, offers 920,000 pixels and 100% field of view.The separate units slide onto the body via a stainless steel rail and lock into place. They can then be released by a lever on the camera’s body. Both the body and lens unit use magnesium alloy exterior.]Each lens unit has its own unique specifications relating to its sensor and optics, meaning that different lens units will change the features, behavior and performance of the camera body to varying degrees when attached.