Field of View

hamsterboy

Hi All
Anyone know a quick and easy way of measuring Field of View of a camera (phone camera etc...), obviously reading the manual is one way but wanna measure it meself

Cheers

HB

DaireQuinlan

hamsterboy wrote: »

Hi All
Anyone know a quick and easy way of measuring Field of View of a camera (phone camera etc...), obviously reading the manual is one way but wanna measure it meself

You could take a picture, then measure between the two extremes in the shot, take into account how far the camera is from your baseline, spot of trigonometry , and bobs your uncle. http://www.calculator.net/triangle-calculator.html

Heebie

What he said, but create your points of reference.

Put two posts up, or find two. (Local football pitch probably has two that will work)

Draw or imagine a line at 90 degree angles to the line between the two posts, exactly halfway between. Start at a distance, looking through the camera, walking forward on the line until the posts are exactly at the edge of the image.
Using the distance between yourself and the line between the posts, and half the distance to the posts, you can get the measurements for a right triangle. Use that right triangle and basic Geometry to determine the angle (in degrees) at the camera, and double that to get the field of view.

If it's a zoom lens, you can do the exercise over and over again.