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Grashtel · #12 (**permalink**) 29-January-2008, 07:44 PM

Quote:

Originally Posted by Itsme

II suggest those who don't understand the concept to grab a camera and take a picture of the night sky in a totally dark environment and then take the same shot but with a light turned on. You won't see stars on that second shot, all you'll see is the bright light.

Assuming that the camera has a sufficiently broad range of auto-exposure, which is unlikely at best. Even with a high ISO getting stars to show up in a picture taken with non-specialized equipment requires very long exposures (upwards of 10 seconds), well beyond what most auto settings can accommodate and manually setting a camera is beyond what anyone who doesn't already know enough realize that it would be impossible to photograph stars (on the Moon or anywhere else) with settings useful for taking photos in direct sunlight.

Also it is quite possible to photograph stars with a light turned on, its just that any lit objects will be horribly overexposed (i.e. solid white with no detail).