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KODAK PROFESSIONAL: Technical Information Bulletin

Red Spot in Center of Image
 
 

KODAK PROFESSIONAL DCS Digital Cameras

10 March 2006

Does a red spot appear in the center of your images? Photographers often mistake this artifact as flare from the scene or a light slightly off camera.

The red spot is caused by visible light reflecting off the sensor/film cover glass and again reflecting off the rear lens element. Recessed rear lens elements (the back of the lens is closer to the sensor/film) seem to exhibit this artifact more often.

If you find a red spot in the center of your DCR files, try one or all of the following:

  • Reduce the amount, or alter the direction, of the light coming straight into the lens.

  • Open the lens by increasing the aperture or lowering the f-stop.

  • Use a different lens.

Note: Do not flag or stop down the lens! This makes the red spot more pronounced because all the light is focused through a smaller point in the lens.


Kodak and Kodak Professional are trademarks of Eastman Kodak Company.

TIB7063

Technical Information Bulletins provide information of limited or specific application. Responsibility for judging the applicability of the information for a specific use rests with the end user.