The Sony Alpha 7R IV (ILCE-7RM4) is a full-frame mirrorless camera with a 61 MP BSI-CMOS sensor — the highest resolution full-frame mirrorless at launch — 567 phase-detection AF points, 5-axis IBIS, and 4K HDR video. It supports pixel-shift multi-shooting for 240 MP composite images. The A7R IV is the fourth generation of Sony's high-resolution Alpha 7R lineup.