Whether it’s a digital or film unit like the Polaroid snap, the overall photo quality is not just defined by the megapixels of your camera but also takes into account factors such as the sensor size. However, for the best cameras for fun, a 16 MP is considered the best, especially if you don’t have to crop too much in the image. Whether it’s digital or film like the Polaroid snap, you should  be able to get good results.