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The GR Lens A12 28mm F2.5 camera unit is a combined lens and sensor package that slides into a Ricoh GRX body. A camera unit like this only functions when used in conjunction with the Ricoh GXR. This prime, wide-angle camera unit features a 12.3-megapixel APS-C sensor which supports 720p video capture.


  • Status: Available
  • Availability date: 2010


  • Camera type: Mirrorless / Interchangeable Lens
  • Width: 2.7 inches
  • Height: 2.28 inches
  • Depth: 1.98 inches
  • Weight: 0.46 pounds
  • Color: Black


  • Sensor size: Other
  • Size: 23.6 x 15.7mm
  • Sensor type: CMOS
  • Effective pixels: 12.3 megapixels


  • Minimum ISO: 200
  • Maximum ISO: 3200
  • Fastest shutter speed (1/n seconds): 3200
  • Slowest shutter speed (1/n): 80 seconds
  • Max. continuous shooting speed: 24 FPS


  • Video capture: Yes
  • Max. resolution: 720p
  • Standard framerate(s): 24


  • Supported video formats: Motion JPEG (M-JPEG)
  • RAW support: RAW


  • Interchangeable: Yes
  • Supported mounts: Other
  • Other supported mounts: GXR
  • Focal length (wide): 33 mm
  • Focal length (35mm equivalent - wide): 50 mm
  • Widest aperture / f-stop: 2.5
  • Digital zoom: 4 x


  • Video out: No
  • Connection(s): Proprietary


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