When used in combination with 40mm f2.8 lens designed in nice compact shape, this camera is perfectly small and light-weight manual SLR.
[Not very good]
Rather big shutter sound having some of typical mechanical sound of old Pentax SLR's shutter.
The height of "shoulder" of body is especially small.
OM-3,OM-4 with their higher shoulder can be held more tightly. MX can be recommended to people who prefer handy small camera to bring around to camera with good holding and usage.