To extend a photographable range of an imaging apparatus.

An imaging unit 20 is provided with an image pickup optical section 21 having two independent image pickup optical systems 21a, 21b, and an image pickup device section 30 having two imaging devices 30a, 30b individually picking up an object image and outputting an imaging signal. The two image pickup optical systems 21a, 21b have different focal lengths. For example, the 1st image pickup optical system 21a is a fixed focus lens having no zoom lens and the 2nd image pickup optical system 21b is a variable focal distance lens having a zoom lens 220b.