Infrared Training Center Level 1 Practice Exam

What lens is recommended for the camera in the described infrared survey?

9mm 28mm 50mm 19mm

Correct Answer:

19mm

Explanation:

Maximizing area coverage per frame is essential in an infrared survey. A wider field of view lets you capture more ground in each shot, speeding the survey and reducing the number of images you need to collect. Among the options, the widest-angle lens provides the broadest view while keeping the image usable for infrared measurements. Ultra-wide options can introduce distortion and edge softness that hurt accuracy, while lenses with longer focal lengths cover less area per shot and require more images to cover the same region. So the lens that offers the broadest coverage among the choices is the best fit for efficient, effective infrared surveying.

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