iPhone 4 Camera Specifications - Field of View / Vertical-Horizontal Angle
Does someone know the field of view values for the new iPhone4 camera? I'm doing some AR app's, and I want to know the horizontal and vertical angle of the rear camera.
Thanks!
Answer
If the sensor is 3.39 mm tall (referenced to landscape mode), then half that is 1.695 mm. Focal length for the iPhone 4 is listed as 3.85 mm. atan(1.695/3.85) is 23.75 degrees from center to top, or 47.5 degrees top to bottom.
For the longer dimension 4.52/2 = 2.26 mm, atan(2.26/3.85) = 30.41 center to side, or 60.8 degrees left to right (again referencing with respect to landscape orientation).
So 60.8 degrees horizontal by 47.5 degrees vertical.
ADDED much later:
The focal length for the newer iPhone 4S back camera is listed as 4.28 mm, but with the same sensor dimensions as the older iPhone 4. So:
2*atan(2.26/4.28) = 55.7 degrees, by 2*atan(1.695/4.28) = 43.2 degrees
or roughly a 4 to 5 degree smaller field-of-view compared with the iPhone 4.
ADDED much much later:
The sensor size for the iPhone 5S back camera is reported to be 4.89 x 3.67 mm, with a focal length of 4.12 mm. Thus:
2*atan((4.89/2)/4.12) = 61.4 degrees wide
2*atan((3.67/2)/4.12) = 48.0 degrees top to bottom
...or an FOV just a smidge larger than the back camera the iPhone 4.