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December 27, 2007Energy

Wyatt Oil Co.

   Linger alone
Under a red glow
Strange night of stone

A t night various mixed light sources commonly include green fluorescent and orange halogen that contribute to captured image interest. With a low cloud cover these lights not only illuminate objects but can also enlighten the sky. Coupling these effects with long exposures produces unusual color combinations. Unlike film, digital sensors exhibit no reciprocity failure, but do suffer from a few associated problems of their own.

With long exposures digital noise is amplified due to a low signal-to-noise ratio. In noise reduction mode, the camera will make a second identical exposure but with the shutter closed, and then subtract the dark exposure information from the image exposure. This doubles the amount of camera exposure time required and increases internal image computations. Electrical power is required to hold open the shutter, make exposures and process data. Be prepared for battery drainage.

“What I really enjoy about night shooting is that I'm not just recording fractions of a second of time, but minutes, and sometimes hours of time.” - Stu Jenks

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