Calculate Field of View (FOV): Step-by-Step Guide

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Field of view (FOV) is described as an angle representing a triangle, within which objects can be photographed. The user conducted an experiment by photographing a wall, varying the distance from the camera to calculate FOV. They conceptualized an equilateral triangle with the wall's size as the base and the distance to the wall as the height. By calculating the tangent of the half angle and then doubling it, they derived the full angle, which they believe represents the FOV. The method described is a valid approach to estimating FOV, despite the initial uncertainty.
asa!!
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Hi.thanks about my question on focal length.you were really helpful.Another question now about Field of view. I know that it is a angle showing a triangle.inside the area of the triangle any object can be photographed .a i right?i know tha it is not a scientific explanation iam just saying what i haveunderstood.

i have a camera. I do not know the focal length nor the frame size.i want to calculate the FOV.listen to what i thought.i did an experiment.i was taking photos of a wall withbricks soas to be able to calculate the size of the wall i was phtographing each time.at each phot i was changingthe distance between the camera and the wall. i imagined a equilateral triangle.the base is the size of the wall.the height is the distance between the camera and the wall. from there i calculated the tan of the half angle of thetriangle.then i found the half angle , multiplied it by two and i found the whole angle of the triangle. i think this is the FOV.am i right or i have done sillu things?thank you very much
 
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Sounds good to me asa, after a number of pints.
 
i wrote it again because at the first message i had done many mistakes .sorry

Hi.thanks about my question on focal length.you were really helpful.Another question now about Field of view. I know that it is an angle showing on a triangle.inside the area of the triangle any object can be photographed .am i right?i know tha it is not a scientific explanation, i am just saying what i have understood.

i have a camera. I do not know the focal length nor the frame size.i want to calculate the FOV.listen to what i thought.i did an experiment.i was taking photos of a wall with bricks so as to be able to calculate the size of the wall i was phtographing each time (by measuring the number of bricks and multiplying with the length of the brick).at each photo i was changing the distance between the camera and the wall. i imagined a equilateral triangle.the base is the size of the wall.the height is the distance between the camera and the wall. from there i calculated the tangent of the half angle of the triangle.then i found the half angle , multiplied it by two and i found the whole angle of the triangle. i think this is the FOV.am i right or i have done silly things?thank you very much
 

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