The Sony FDR-AX53 supports a higher video resolution than most video cameras that came out more than a year ago. This Sony camcorder supports a 3840 x 2160 pixels video resolutions, whereas most comparable spec video cameras that are a similar age to it support a 640 x 480 pixels video resolutions. In addition, this video camera support video resolutions of 1280 x 720 pixels and 1440 x 1080 pixels and 1920 x 1080 pixels.
This camcorder's video resolution (3840 x 2160 pixels) is in fact the best supported video resolution across all video cameras that have been available for around the same time as this camcorder.
A 640 x 360 pixels video resolutions is the worst supported video resolution across comparable types of camcorder.
What does "video resolutions" mean?