According to the French philosopher Henri Bergson there are two types of Time, mental, mathematical Time is the time of science and the psychological Time.
The mathematical time is measurable, fritter and thus represents the flux of the real time. The boat, car, train is the symbolic representation of the time as a result of the movement. For Bergson the key to reality lies in that the change (time and motion) must be treated as indivisible. The split time is the spacial Time and not Duration. The real time and true reality do not consist of positions where positions imply immobility.
The psychological time or else Duration is indivisible , continuous , housed within the consciousness and can not be analyzed with math or be represented by a line. According to Bergson, we have an intimate and direct experience of duration. We do not experience time as a series of moments but as a continuation. This continuity and durability is the immediate data of consciousness. Since experiencing the duration, the present moment is always transient boundary between past that passed and the future that is coming. The relationship present - past identified with the connection of conception - memory. Memory acts as the unifying factor in the succession and passing levels of consciousness. Memory, keeping the past in the present allows the existence of time. Without a rudimentary memory connecting two moments there will be only one or only the other, nothing before or since, no duration, no time.
The short-term memory lingers 5-8 seconds , and affects the perceived present. The time of exposure of all photos is 8 seconds.