Image capturing apparatus

An image capturing apparatus comprising:

• an image sensor in which a plurality of first pixels and a plurality of second pixels are arranged alternately, whereby each of the first pixels counts a number of entering photons and outputs a count value as a first image signal and each of the second pixels outputs an electric signal corresponding to a charge amount obtained by performing photoelectric conversion on entering light as a second image signal;
• a generator that generates an image by selecting one of the first image signal and the second image signal;
• and
• an obtaining unit that obtaining a luminance value for each pixel,
• wherein the generator includes a dynamic range expander that expands a dynamic range using the first image signal and the second image signal, and
• the dynamic range expander performs, for each pixel, processing of
• selecting the first image signal in a case where the luminance value is less than a predetermined first threshold value,
• selecting and synthesizing the first and second image signals in a case where the luminance value is equal to or greater than the first threshold value and less than a predetermined second threshold value which is larger than the first threshold value, and
• selecting the second image signal and adjusting its sensitivity in a case where the luminance value is equal to or greater than the second threshold value.