Which types of lenses are suggested for use in photo surveillance?

Using a 50mm lens plus additional lenses is suggested for photo surveillance due to its versatility and ability to capture high-quality images at a variety of distances. A 50mm lens provides the advantage of a natural field of view that closely mimics human eyesight, making it ideal for capturing subjects in a realistic manner without distortion. This focal length is particularly effective for close to medium-range surveillance, allowing the investigator to frame subjects without being overly intrusive.

Additionally, having the option of extra lenses further enhances the photographer's ability to adapt to different situations and environments. For instance, a wider lens could be beneficial in tighter spaces where capturing a wider scene is necessary, while a telephoto lens could be used to capture subjects from a distance without alerting them. This flexibility is crucial in surveillance work, where the ability to switch between different lenses can make a significant difference in effectiveness and the quality of the surveillance data collected.

Other options focus on more specialized lenses that may not offer the necessary adaptability for diverse surveillance situations, making them less suitable for this particular purpose.