Historical evidence can be portrayed through photography due to its ability to reproduce reality from the past . History textbooks often use photographs to reinforce historical texts . The images produced by the photographers are meant to tell stories . Often times, photographers may choose to exaggerate what is shown in the pictures with different effects and techniques . This all relates back to how most evidence about the past is all a matter of bias and may not be taken into account completely . In order for something to be fully accurate , one must be witnessing the event in person and not determine it from what is depicted from photographs .