The eyes of the subject may come out red, or fuzzy white circular spots may appear when using the flash. These phenomena can be reduced by taking the following steps.
The “Red-eye phenomenon”
This is caused by the reflection of flash light off the blood vessels of the retina of the subjects eyes because the pupils of the subjects eyes are wide open in a dark place.
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Eye |
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Retina |
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How can the “Red-eye phenomenon” be reduced?
White circular spots
This is caused by particles (dust, pollen, etc.) in the air, which when they are close to the lens, can be accentuated by the camera's flash.
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Particles (dust, pollen, etc.) in the air |
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Subject |
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How can “White circular spots” be reduced?
Basic techniques for better images