https://www.fdphotostudio.com/become-better-photographer-autofocus-assistance-with-david-bergman/?no_create_html_cache=1 Today's tip from photographer David Bergman and AdoramaTV will help you get razor-sharp images in low-light, by using  the auto focus assist beam. If you ever shot in low-light conditions, you probably fell victim of bad, out-of-focus images as well. Luckily, Mr. Bergman has a few quick tips to solve this problem with a use of speed lite AF system.