I found this fun post through dpreview.com. It provides (speculative) specifications of the human eye- compared to a camera lens. Check out the full post(citing sources) here:
http://tinyurl.com/25hweff
Here are the quick specs of the human eye:
Sensor (Retina): 22mm diameter x 0.5mm thick (section); 10 layers
Resolution: 576MP equiv.
Visual Acuity: ~ 74 MP (Megapixels) (printed) to show detail at the limits of human visual acuity
ISO: 1 - 800 equivalent
Data Rate: 500,000 bits per second without colour or around 600,000 bits per second including colour.
Lens: 2 lenses - 16mm & 24mm diameter
Dynamic Range - Static: contrast ratio of around 100:1 (about 6 1/2 f-stops) (4 seconds)
Dynamic Range - Dynamic: contrast ratio of about 1,000,000:1 (about 20 f-stops) (30 minutes)
Focal Length: ~ 3.2mm - (~ 22mm 35mm equiv)
Aperture: f2.1 - f8.3 (f3.5 dark-adapted is claimed by the astronomical community)
FOV Field of View: 95° Out, 75° Down, 60° In, 60° Up
Color Space - 3D (non-linear) RGB
Color Sensitivity: 10,000,000 (ten million)
Color Range: 380 to 740 nm
White Balance: Automatic (constant perceived color under different lighting)
Refresh Rate: foveal vision (high-quality telescopic) - 3-4fps; peripheral vision (very inaccurate) - up to 90fps
Corey
