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Comparison of daylight versus the golden hour at Newbury Racecourse. In photography, the golden hour is the period of daytime shortly after sunrise or before sunset, during which daylight is redder and softer than when the sun is higher in the sky.
In practical terms, it means that if one face in a group portrait is 4 metres from the "key" light and another is 5.6 m away, the face further from the light will be one f/stop darker. In an outdoor portrait of a group of 200 people taken on an overcast day, the lighting of all the faces will be equal.
Pale Blue Dot is a photograph of Earth taken on February 14, 1990, by the Voyager 1 space probe from an unprecedented distance of approximately 6 billion kilometers (3.7 billion miles, 40.5 AU), as part of that day's Family Portrait series of images of the Solar System.
Diwali is a five-day Hindu festival of lights which symbolises the spiritual victory of light over darkness and good over evil. It commemorates the day when Hindu god Rama, along with his wife-consort Sita and brother Lakshmana, returned to his kingdom of Ayodhya after defeating demon-king Ravana and following 14 years of exile.
Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."
A typical problem with cameras using built-in flash units is the low intensity of the flash; the level of light produced will often not suffice for good pictures at distances of over 3 metres (10 ft) or so. Dark, murky pictures with excessive image noise or "grain" will result. In order to get good flash pictures with simple cameras, it is ...
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When shooting day for night, the scene is typically underexposed in-camera or darkened during post-production, with a blue tint added. Additional effects are often used to heighten the impression of night. As the light sensitivity of film and video cameras has improved, shooting day for night has become less common in recent years. [2]