An imaging apparatus includes: a sensor unit having a light receiving unit provided with a plurality of pixels for photoelectrically converting received light to generate an electrical signal after photoelectric conversion, and capable of reading the electrical signal generated by the light receiving unit as image information； a control unit configured to control an output mode of the electrical signal on a pixel-by-pixel basis such that a pixel signal level generated by photoelectrically converting the light and a reset level of the pixels are alternately output, and configured to output the electrical signal corresponding to a specified display pattern； a signal processing unit configured to perform signal processing on the electrical signal output from the sensor unit； and a transmission unit configured to transmit a processed signal processed by the signal processing unit to outside.
