Which of the following describes a Field or Reference Sketch?

A Field or Reference Sketch serves as an essential tool in the documentation of a crime scene. It provides an initial visual recording that captures the layout, dimensions, and key features of the scene as it was found during the investigation. This sketch is typically created in the field to accurately reflect the positioning of evidence, the relationship between various elements of the scene, and can be invaluable for both analysis and presentation in court.

By documenting the scene in this way, the sketch helps to preserve crucial details that may not be apparent in photographs alone, such as distances and spatial relationships. This accuracy is paramount for investigators to relay their findings effectively and for other legal professionals to understand the context of the evidence.

The other choices highlight different concepts that do not align with the primary purpose of a Field or Reference Sketch. Personal opinions are subjective and not documented in a formal sketch. A diagram created after the investigation concludes suggests a lack of immediacy and context that a field sketch provides. Lastly, a computer-generated illustration does not align with the traditional method of gathering initial information on scene characteristics, which is integral to the role of the evidence technician in the field.