|The digital cameras I've seen cannot take pictures of things that are far away, like a mountain, and things that are close, like a driver's license, with the same camera settings. Instead, you have to use the buttons on the camera to inform it if the subject is closer than about one and a half feet, or further away than that. When the camera is set to take pictures of close objects, it is said to be in macro mode.|
The cameras I've seen that sell for $150 and up do have macro mode available; make sure any camera you get has it. As for pixels, I would venture to say that any camera good enough to have macro mode will also have enough pixels (3 million pixels and up).