An image sensor includes a color filter array and a light receiving element. The color filter array includes plural repeating unit cells, and at least one of the unit cells includes at least a yellow filter, at least one green filter, and at least one blue filter. The yellow filter is configured to transmit a green component and a red component of incident light. The green filter is configured to transmit the green component of the incident light. The blue filter is configured to transmit a blue component of the incident light. Each of the unit cells does not comprise a red filter configured to transmit the red component of the incident light. The light receiving element is configured to convert the incident light transmitted by the color filter array into electric signals.