The Leica M8 doesn't just have a pretty body, nor is it resting on the laurels of its predecessors: it's got a 10.3 megapixel resolution, with a low-noise CCD image sensor that starts at ISO 160 but that can also kick up to ISO 2500.
Just as grain size in silver halide film ultimately limits the amount of detail you can see in a photograph, the background noise produced by the sensor does much the same in digital imaging.
By combining a state-of-the-art image processing engine and back-illuminated CMOS image sensor with low-noise, even up to ISO 6400, and approximately 16.0 effective megapixels, the PENTAX X-5 provides users with very high-resolution images.