What is crucial for conducting a successful field sketch?

Photographing before marking is crucial for conducting a successful field sketch because it allows for a visual record of the scene as it appears initially. This documentation can capture important details that may change after the marking process begins, ensuring that all relevant evidence and spatial relationships are preserved. It provides a reference point for accuracy when creating the field sketch later, as it allows the investigator to recreate the environment in its original state.

Utilizing photographs can also support the written and drawn documentation, providing a clearer understanding of the context of the scene. This collaborative approach enhances the overall integrity of the evidence collected, which is essential for investigations and any subsequent legal proceedings. By prioritizing photographic evidence as an initial step, the investigator ensures that they have a comprehensive record of the scene that can be relied upon during analysis.