Which of the following is NOT a recommended action when preserving a crime scene?

Taking photographs of all evidence is, in fact, a standard and highly recommended practice when preserving a crime scene. Photographs provide a visual record of the scene as it was found, capturing details that may change over time or be altered during the investigation process. This documentation is essential for further analysis and can be pivotal in the legal process, allowing investigators and the court to understand the scene as it existed initially.

The other actions mentioned, such as following police directions, making notes of evidence, and protecting the scene's perimeter, are all essential components of effective crime scene preservation. Following police directions ensures proper protocol is maintained, while making notes of evidence helps create a comprehensive record of what was found, and protecting the scene's perimeter prevents contamination or alteration of evidence. Each of these actions plays a critical role in ensuring the integrity of the investigation and the evidence collected.