Ricoh GXR Mount A12 Preview: 1. Introduction: Digital Photography Review. Looks very interesting - especially the operation of the GRX is similar to my GRD, and that is really great. The GRX just looks like a camera and not like a deformed child's toy. In any case, Ricoh has done it right, at least on paper: no anti-aliasing filter and focus peaking. The missing anti-aliasing filter always excites me in the pictures from the M8 and the focus peaking is the feature from the new Sony firmware that has excited me the most. I'm curious to see what it will cost, the module (announcement is 650 dollars, but street prices always deviate) - the body is now under 300 euros really cheap to get. And around 200 euros for the additional viewfinder. If the module is cheaper than the two currently available A12 modules, then the GXR could be a pretty brilliant alternative for Leica-M lenses.