FLIR AX8 Field of View

[Chuck - Raymarine - Moderator]

Joe,

Unlike binoculars, spotting scopes, deck cameras, and other devices intended to view objects at long distances, the AX8 is designed to view objects at relatively short distances. A little trigonometry may be used to determine the vertical and horizontal dimensions within view at any distances from the camera. As indicated within the prior response, the field of view is 48° x 37°. the following formulas may be used to determine the horizontal and vertical views at any distance:
- Image Width = 2 * ((tan (48 degrees / 2) * distance) = 2 * ((tan 24 degrees) * distance)
- Image Height = 2 * (tan (37 degrees / 2) * distance) = 2 * ((tan 18.5 degrees) * distance)

ex. Provide image dimensions at 6 ft: Image Width = 2 * ((tan 24) * 6 ft) = 5.3 ft; Image Height = 2 * ((tan 18.5) * 6 ft) = 4.0 ft.