An imaging device includes: an imaging element which comprises a plurality of pixels capable of switching between a linear conversion operation for linearly converting incident light into an electric signal and a logarithmic conversion operation for logarithmically converting the incident light into an electric signal, according to an incident light quantity; an operation section which is operated for changing an inflection point, the inflection point is a boundary between a linear region and a logarithmic region of output signals of the imaging element; and an inflection point changing section which changes the inflection point of the imaging element according to an operation of the operation unit.