A depth pixel includes a first photodiode, a second photodiode and a common microlens. First and second taps are disposed at both sides of the first photodiode in a first horizontal direction to sample a photo charge stored in the first photodiode. The second photodiode is disposed at a side of the first photodiode in a second horizontal direction perpendicular to the first horizontal direction. Third and fourth taps are disposed at both sides of the second photodiode in the first horizontal direction to sample a photo charge stored in the second photodiode. The common microlens is disposed above or below the semiconductor substrate. The common microlens covers both of the first photodiode and the second photodiode to focus an incident light to the first photodiode and the second photodiode.