In order to reduce visual fatigue induced by viewing stereo 3d content, a horizontal image translation (HIT) is commonly applied to the stereo views such that the presented disparities are contained within a range that can be viewed comfortably. The technique is also frequently applied in a temporally dynamic manner. The perception of this dynamic HIT (DHIT) by a human observer needs to be studied in order to be able to parametrize it properly in stereo 3d production or automated systems. One such automated system is our previously proposed gaze adaptive approach, where the current point of gaze of the subject is brought into the zero parallax setting by applying DHIT. In this paper, the perceptual properties of dynamic HIT and our gaze adaptive approach are investigated in three subjective experiments.