A DLC is simply another term for getting a sharp, in-focus image. You want to make sure you’re using the best lens and camera for the kind of photograph you want to take. If you’re using your phone’s camera, there’s a good chance you’re not going to get the best photo, or even the photo that you want.
You want to use a lens that lets in enough light, but that also has a quick shutter speed. The quicker your shutter speed, the clearer your photo will be. Another way to get a clear picture is to hold the camera as still as possible. For beginners, this will be tough. Using a tripod to hold the camera at a set height will help with this if you’re planning to only get one kind of shot.