Term
| What focal length is the human eye comparable with? |
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Definition
| 17mm lens in the 35mm motion picture format |
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Term
| What is the normal viewing range of the eye? |
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Definition
| 180 degrees (wide) by 120 degrees (height) |
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Term
| What does the pupil compare to in the eye? |
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Definition
| iris. It is a natural diaphragm or light restrictor |
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Term
| What is the aperture range of the eye? |
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Definition
| f-2.0 to f10; a ratio of 25 to 1 or 5 stops. |
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Term
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Definition
| Receptors of light in retina |
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Term
| How many rods are in the eye? |
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Definition
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Term
| How many minutes of adjustment does the human eye need for darkness? Light? |
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Definition
| 50 mins to complete adapt to darkness. 30 sec to adapt to light. |
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Term
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Definition
| Color receptors of light in the retina |
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Term
| How many cones are in the eye? |
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Definition
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Term
| Which colors are the eye cones subdivided into? |
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Definition
| red, blue, and green light |
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Term
| How many hues (colors) of light can cones differentiate? |
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Definition
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Term
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Definition
| a 1/50-inch (mechanical pencil lead size) area of cones in the back center of retina |
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Term
| How many degrees does the fovea "see" in sharp focus |
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Definition
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