Sony's A7R Mark IV mirrorless camera packs a 61-megapixel sensor https://engt.co/2jMQYKO pic.twitter.com/JMHFYUPPFV

Sony's A7R Mark IV mirrorless camera packs a 61-megapixel sensor https://engt.co/2jMQYKO pic.twitter.com/JMHFYUPPFV