A process of manufacturing an imaging element is simplified. The imaging element includes a polarization pixel and a phase difference pixel. The polarization pixel included in the imaging element includes a polarizer transmitting incident light having a specific polarization direction and generates an image signal based on the incident light being from a subject and being transmitted through the polarizer. The phase difference pixel included in the imaging element includes a light shielding film being formed simultaneously with the polarizer and being disposed to be shifted in a predetermined pupil-division direction for pupil-dividing the incident light from the subject and generates an image signal for detecting a phase difference.