useful links

Really good camera exposure simulator that shows how the aperture, shutter speed, ISO, lens focal length and ambient lighting all contribute to the appearance of an image. http://camerasim.com/camera-simulator/

This online portrait lighting simulator is a great way to see how light quality and direction can change the look of a portrait. The subject is a bit creepy particularly in very low light.  http://www.zvork.fr/vls/

Screen shot 2012-11-30 at 16.56.37

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