Cameras modules for my project
I am currently experimenting with this module: http://www.uctronics.com/mega-pixel-camera-module-mt9d111-jpeg-out-p-227l.html

I2C connection and supplies are working fine with an Arduino Uno, but getting the image data with an Arduino might be not possible.
You can slow down the Pixel Clock of this module to 375kHz, bit I think the  GPIO read-out speed (at least with the standard digitalRead functions) and memory of the Arduino are not sufficient...