So, a 50mm lens on a Nikon DX body has a comparable angle of view to a 75mm lens on an FX body, because 50 x 1.5 = 75. • Photography cheat sheet: Focal lengths explained Focal lengths below 24mm ...

DRS 3306-N is a 30 fps thermal IP camera with 4x digital zoom and 50mm focal length. The camera utilises DRS Technologies’ proprietary 320x240 Vanadium Oxide (VOx) uncooled thermal detector technology ...

Lenses are known by their focal lengths - 14mm, 50mm, 200mm. Their role is to bend the rays of light that enter through the aperture so they converge into a neat point at the back of the camera.

1/3” 5-50mm F/1.6 (Model: M13VG550IR) is released addressing such needs with the bandwidth expanded to the NIR range while retaining a focal length range the same as the current Model: M13VG550.