Sorry, it's realy off topic..
Please help me, I realy need to know this..
 - why video signal from a camera does not contain DC component..
   is there a simple DC restorator circuit?
 - I have build a video acquicition system, the resulting image was not
   so satisfied me.. there're some pixel shift to the right or left..
   I use 8 MHz frequency for sampling.. is that normal?
   how's this can be happen..? how to eliminate that?

any sugestion?

Regards,
-ari-