A high speed video camera capable of taking video of a high speed phenomena by an image sensor composed of a matrix of MOS type light sensor circuits each representing a unit pixel and having a wide dynamic range with no occurrence of afterglow, recording the video by storing image data output from the image sensor, executing compensation of outputs of the image sensor based on the image data read from the memory at a normal processing speed and displaying the video based on the compensated video data on a display device. Accordingly, with this camera, it is possible for the user to take and record video of a high speed phenomenon at a very high speed while executing compensation for variations in outputs of the image sensor at a normal processing speed based on the video data read from the memory.