The effect of various focal length photographs on eyewitness identification accuracy

被引：0

作者：

Kask, Kristjan ^{[1
]}

Arras, Erlend Art ^{[1
]}

Malleus, Elina ^{[1
]}

机构：

[1] Tallinn Univ, Sch Nat Sci & Hlth, Ctr Excellence Behav & Neural Sci, Narva Mnt 25, EE-10120 Tallinn, Estonia

来源：

PROCEEDINGS OF THE ESTONIAN ACADEMY OF SCIENCES | 2021年 / 70卷 / 04期

关键词：

focal length; eyewitness identification; simultaneous lineup; confidence; accuracy; FACE RECOGNITION; CONFIDENCE; DISTANCE;

D O I：

10.3176/proc.2021.4S.07

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A key factor that has rarely been investigated regarding the technical details of photographs in eyewitness identification research is focal length. Focal length can be defined as the distance between the camera lens and the camera sensor, providing variance in the viewing angle and magnification of objects in the frame. In this paper, the effect of various focal length photographs on eyewitness identification accuracy is examined. Ninety adult participants watched a video of a mock theft, after which they were randomly shown a simultaneous six-person target-present lineup of photographs using a 24mm, 50mm or 100mm focal length. The participants who viewed photographs taken with either a 100mm or 50mm focal length identified the suspect more often than those who viewed photographs taken with a 24mm focal length. Based on these findings, we suggest that the standard focal length of photographs used for the purpose of eyewitness identification should always be between 50 mm and 100 mm.

引用

页码：354 / 360

页数：7

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