System camera camera version body only series sigma sd effective pixels 29 megapixel total resolution 33 megapixel sensor format aps c sensor type foveon x3 quattro sensor size 23 6 x 15 8 mm image processor dual true iii display properties anti reflection coating fixed display type lcd display size 3 inch display pixels 1 620 000 frame coverage display 100 lens mount sigma sa crop factor 15 light sensitivity iso 100 6400 max pictures per