vinay 
can any one can guide, how to change the camera(ov7670) autofocus which have been interfaced to mini2440 from the device itself from the terminal. or suggest any procedure for doing so. my requirement is to change the auto focus i.e.., automatic gain adjustment,automatic white balance to be disabled to my camera. due to the change in auto adjustments of camera, the intensities values observed were getting modified. so please help me regarding this issue