The Differences Between the Human Eye & a Camera Lens
The human eye and a camera lens have a few things in common, most notably that they both use a converging lens to receive and project images. But human eyes and camera lenses have many things that set them apart from each other.
-
Retina Provides Color
-
The image an eye perceives is projected from the cornea to the retina, which absorbs the image and projects it to the brain. A camera projects an image on to film where it is captured and saved as a black and white image. The retina contains millions of cones that provide the image with color.
Stereoscopic View
-
The biggest difference between eyes and a camera lens is that two eyes give us stereoscopic vision. This allows our eyes to project a more detailed image to the brain than a single camera lens and provide depth of field, something a single camera lens can't do.
-
Light Sensitivity
-
A camera lens projects an image onto film that has chemicals with a uniform sensitivity to light. The eye project images on to the retina that has rods with varying capacities to absorb light.
Light Adjustment
-
The human eye controls how much light it receives by reducing and enlarging the size of the pupil. A camera lens has to be adjusted to receive the proper amount of light.
Cameras Have no Blind Spot
-
The human eye has a "blind spot" located where the optic nerve leaves your eye and connects to the brain. At that connection point, the eye can't see anything. A camera lens doesn't have a connecting point like this and has no blind spot.
-