Adjustments to image settings are vital as well. Shoot images in Raw, or Raw + JPEG mode; Raw images are not compressed in-camera, which preserves image data that would otherwise be lost during JPEG compression process. Raw files also offer much greater flexibility during post-processing (more on that later). Set your ISO to 1600, white balance to the daylight setting, shutter speed to manual or bulb exposure, and focus to manual. Turn off any high-ISO and long-exposure noise reduction features that may be built into the camera. And, finally, set the lens aperture (the width of its open iris) as wide as it will go, allowing it to take in as much light as possible.