Using NVGs, depth perception is reduced at distances less than how many feet and greater than how many feet?

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Multiple Choice

Using NVGs, depth perception is reduced at distances less than how many feet and greater than how many feet?

Explanation:
Depth perception with NVGs is limited because the image is two-dimensional and has restricted cues for judging distance. Close-in, under about 50 feet, small target features and rapid image changes make accurate range judgments unreliable. Far away, beyond about 500 feet, the image loses texture and detail, and parallax cues diminish, so judging depth becomes difficult. Because of these limits, pilots rely on other cues and maintain conservative margins in that mid-range. Therefore, depth perception with NVGs is reduced at distances less than about 50 feet and greater than about 500 feet.

Depth perception with NVGs is limited because the image is two-dimensional and has restricted cues for judging distance. Close-in, under about 50 feet, small target features and rapid image changes make accurate range judgments unreliable. Far away, beyond about 500 feet, the image loses texture and detail, and parallax cues diminish, so judging depth becomes difficult. Because of these limits, pilots rely on other cues and maintain conservative margins in that mid-range.

Therefore, depth perception with NVGs is reduced at distances less than about 50 feet and greater than about 500 feet.

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