Which technique utilizes finely powdered lead to visually record latent print images?

The technique that utilizes finely powdered lead to visually record latent print images involves the application of fine powders to enhance the visibility of fingerprints on various surfaces. This is commonly known as the powdering method, which allows for the physical development of latent prints by adhering the powder to the oils and residues left behind by the ridges of the fingerprint.

Powdering works effectively on non-absorbent surfaces such as glass, metal, or plastic, where latent prints may not be easily visible. The powder adheres to the fingerprint residues, creating a contrast that makes the details of the print more visible for further examination or documentation.

While photography is an important aspect of capturing the image of latent prints for documentation, it does not intrinsically involve the use of powdered lead. Instead, photography is often used to capture visual documentation after other techniques, such as powder lifting or chemical processes, have made the prints visible. X-ray techniques and spray assessment are not standard methods for visually recording latent prints in the context of forensic science.