2006-08-02 03:50:32 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Do you mean that there is a black dot at the center of the bright sun image? Or at the exact center of the photo? Or is the entire sun image dark?
There is an old physics effect called "Poisson's spot." If you shine an expanded but collimated laser beam on a small ball bearing it will cast a dark shadow. But in the exact center of the shadow there is a tiny bright spot. This is caused by the diffraction of light waves at the edge of the ball.
You might be seeing something caused by the diffraction of the sunlight from the circular edge of the camera lens or a circular aperature inside the lens.
2006-08-02 05:57:04 · answer #1 · answered by Tom H 4 · 0⤊ 0⤋
your camera is trying to compensate for teh brightness of the sun and surrounding (not so bright) sky. With more sky it lowers teh brightness of the sun to get the rest of the picture right, blacking out the sun.
2006-08-02 10:59:06 · answer #2 · answered by Jack 4 · 0⤊ 0⤋
It is possibly a burnt out pixel. DOnt do it. SUnlight through a lens creates lots of heat at the focal point and can burn anything
2006-08-02 10:56:03 · answer #3 · answered by Dr M 5 · 0⤊ 0⤋
as you studied in physics i think yet not sure the reason is the interference caused between the light from the sun and the camera
2006-08-02 11:33:34 · answer #4 · answered by Anonymous · 0⤊ 0⤋
It may be the cross hair of the camers screen ...lol
2006-08-02 10:58:51 · answer #5 · answered by MaxMetallica 3 · 0⤊ 0⤋