Electronic camera for adjusting a parameter for regulating an image quality based on the image data outputted from an image sensor

Abstract

An electronic camera includes a pre-processing block. The pre-processing block fetches four partial images outputted in a parallel manner from an image sensor in response to a clock CLKhaving a frequency equal to or less than 432 MHz, and performs four pre-processes that have responded to a clock CLKhaving a frequency ¼ the frequency of the clock CLK, on each of the fetched four partial images. An image based on the processed four partial images is outputted from an LCD monitor. An evaluation-image producing circuit responds to a clock CLKso as to create an evaluation image based on the processed four partial images. A frequency of the clock CLKis adjusted in a range in which ¼ of 432 MHz is the upper limit. A parameter for regulating a quality of an output image is adjusted based on the evaluation image thus created.