Large array CCD camera and arduino?

Okay, that makes sense. Thank you. My old $3500 camera took about 30 seconds to download a 5mp image, so I guess the price for the camera was spent to implement a fast, expensive processor that is at least what, 18 times faster than the one in the arduino? Sorry, I'm still very new to this, so I obviously don't know what I'm talking about yet. lol

I need to find an Electronics for Dummies book to read...