~50mm for a full-frame camera or ~35mm for a crop-frame should have a similar FOV as how the human eye sees!
fywu85
I notice that given the same FOV, the degree of distortion will be very different in different configurations. Where does that distortion come from? Does human vision have distortion? How does camera vision compare to human vision?
arjunsrinivasan1997
Since the human eyes are essentially camera lenses that capture the world, has it been computer to what the equivalent focal length/sensor size of the human eye is
nathanpetreaca
To arjunsrinivasan1997, yes. The focal length of the eye has been measured to be about the equivalent of a focal length of 50mm. As for the sensor size, that is a lot more complex, because the eye does not have uniform resolution in what it sees. The center of vision is very high resolution while the peripheral vision is much lower resolution. That being said it is said that human vision has a resolution of 576 megapixels.
nathanpetreaca
To fywu85, the distortion of different lenses all has to do with perspective geometry. For the most part, as you increase the focal length, the amount of perspective distortion created decreases, while as you decrease the focal length the opposite happens. The Wikipedia page on this is actually quite good, so I would recommend looking at this https://en.wikipedia.org/wiki/Perspective_distortion_(photography) .
dukeabacus
The focal length of a lens, expressed in millimeters, is the distance along the lens’s optically central axis. Therefore, a 50mm lens can measure 50mm from the point where light rays begin to exit the lens in the same direction as they entered the lens until they arrive on the image plane. Some “pancake” lenses and mirror lenses have optical tricks to shorten them, but in general, the focal length is that physical measurement.
~50mm for a full-frame camera or ~35mm for a crop-frame should have a similar FOV as how the human eye sees!
I notice that given the same FOV, the degree of distortion will be very different in different configurations. Where does that distortion come from? Does human vision have distortion? How does camera vision compare to human vision?
Since the human eyes are essentially camera lenses that capture the world, has it been computer to what the equivalent focal length/sensor size of the human eye is
To arjunsrinivasan1997, yes. The focal length of the eye has been measured to be about the equivalent of a focal length of 50mm. As for the sensor size, that is a lot more complex, because the eye does not have uniform resolution in what it sees. The center of vision is very high resolution while the peripheral vision is much lower resolution. That being said it is said that human vision has a resolution of 576 megapixels.
To fywu85, the distortion of different lenses all has to do with perspective geometry. For the most part, as you increase the focal length, the amount of perspective distortion created decreases, while as you decrease the focal length the opposite happens. The Wikipedia page on this is actually quite good, so I would recommend looking at this https://en.wikipedia.org/wiki/Perspective_distortion_(photography) .
The focal length of a lens, expressed in millimeters, is the distance along the lens’s optically central axis. Therefore, a 50mm lens can measure 50mm from the point where light rays begin to exit the lens in the same direction as they entered the lens until they arrive on the image plane. Some “pancake” lenses and mirror lenses have optical tricks to shorten them, but in general, the focal length is that physical measurement.