The GR LENS A12 50 mm uses a 23.6 mm × 15.7 mm CMOS sensor, which is capable of making full use of superior GR LENS optical performance. With the low level of color and frame aberrations even near the edge of the image, refined bokeh can be enjoyed with the aperture wide open, and stopping down gives comfortably crisp resolution. In addition, the wide dynamic range and resolving power of the approximately 12.30 million effective pixels enhance the reproducibility of details and delicate tonal nuances. The result is high image quality that is more than adequate for large-format prints.

Additional control is achieved with the manual focus ring - so that extra fine focusing can be achieved manually - particularly useful for Macro photography.

GR LENS A12 50 mm can shoot HD movies. Image size is 1280×720, aspect ratio 16:9, and frame rate 24 frames/second. Utilizing the high sensitivity (maximum ISO 3200) and the bokeh enabled by the F2.5 aperture and the large image sensor, it is possible to create impressive movies with a different feel than those of standard video cameras. The GXR body has an HDMI connector, and for large-screen viewing of the movies shot, the GXR can be connected to TVs supporting HDMI.

Digiscoping with the A12
It is possible to digiscope with the A12 50mm, but due to the size of the lens unit and no option to attach filter rings, it may be difficult to find a suitable bracket to attach the camera to the scope.

Using this lens unit with the Olivon T84-EDO and Olivon UDCA bracket, the fixed 50mm focal length just about eliminates vignetting, but with no zoom options, it can't completely eliminate it, this may not be the case with other scopes and eyepieces.

Also the lens unit is just slightly to large to fit the Olivon UDCA, so when the lens tries to focus, it hits the eyepiece of the scope. Using the lens in manual mode may help - further testing is required. I personally feel that the S10 unit is preferable to use as a digiscoping unit.