Sinar AG is a Swiss company producing medium format and large format cameras (4"x5"/5"x7"/8"x10" formats), which allowed both the lens and the film back or sensor back to move in rotation or linearly in any direction (up/down, left/right, front back linearly, and pitch yaw tilt rotations), thus allowing precise image alignment corrections.The use of large film gave greater resolution than 35 mm or 6x6 (2 1/4" x 2 1/4") or 6x9 cm etc.