Maybe i'm not clear with my question.
One of my coworker tells me that 75 dpi is the default and only value for the dpi property of cameras, so maybe i'm not trying to change the right property.
My problem is, the photos i take are coming out in VGA quality (640x480). When i use the app supplied with the camera, i can go up to 5120x3840, and i've got many choice in between (800x600, 960x720, 1024x768.. etc..) That's what i'm trying to change. Anyway to get and set those values? Or would you need any other information to be able to help me?