While 4K camcorders are also HD, these digital camcorders can capture video at a resolution of 4096 x 2160 pixels, which is four times the resolution of standard 1080p HD video. This means that 4K video is much sharper and more detailed than HD video. HD camcorders, on the other hand, are limited to a maximum resolution of 1920 x 1080 pixels, which is still considered high-definition but not as sharp as 4K video.