Solid-state imaging apparatus

[0049]FIG. 9 is a block diagram showing construction of the solid-state imaging apparatus according to the invention. In FIG. 9, what is denoted by 1 is an imaging optical system for image taking of which focal distance and stop are controlled by an optical system control circuit 12. Denoted by 2 is a solid-state imaging device having an equivalent construction as that of the above described fundamental construction where each signal can be independently outputted of the first pixel and the second pixel constituting a unit pixel, disposed at locations that are regarded as substantially the same location at which image is formed by the imaging optical system 1. Drive of the solid-state imaging device is controlled by a drive circuit 8 so that similar operation as that shown in the above fundamental construction can also be effected. Denoted by 3, 4 each are an A / D conversion apparatus for converting output signal of the solid-state imaging device 2 into digital signal, which are conne

[0089]In this manner, with the solid-state imaging apparatus according to the above third embodiment, correction of shading also becomes possible in addition to correction of sensitivity characteristic difference between the signals of the first pixel and of the second pixel so that image taking data of even higher quality can be acquired. Also in the shading correction, high-quality image taking data can always be acquired even if the conditions such as focal length and stop of the imaging optical system are changed.

[0090]It is desirable that the correction data for the shading correction are also provided for each of the conditions of focal distance and stop of the imaging optical system and, if the taking lens is interchangeable, for each taking lens. However, it is not necessary to provide correction data for each of all conditions, and it is possible to substitute correction data under a certain condition for another or to make a desired correction data from correction data under