Taking criminal digital photos is an important investigation work and criminal digital photos are now widely used as evidence.

However,in criminological photography,especially when used for shooting fine marks at accident sites,traditional films,especially reversal films and black-and-white films perform better than common digital cameras,playing higher speed,resolving power and higher definition.

This article pointed out main factors affecting the sharpness of criminological photography,e.

It is an accepted fact that digital photography has entered the filed of criminal photography.

The popularity and development of digital photo -taking technology have made the criminal photography more convenient ,but we should know about its advantages and disadvantages in order to make full use of this technology in the criminal photography.

A Discussion on the Reform and Innovation of the Examination of Criminal Photographing;

<Abstrcat> It is very necessary in standardized construction to implement the photography on crime, it is a prerequisite of guaranteeing the evidence value of the criminal on-the-spot photo; It is the assurance of investigating and giving a clue, analyzing synthetically to the details of the case.