How to use manual focus on your dSLR lens - CNET How to use manual focus on your dSLR lens. Ditch autofocus for manual focus mode to get more precise control over your shots. Find out how to get started using manual focus, and which scenarios call for it.Author: Sharon Profis A Guide to Mastering Manual Focus Below is a guide to a few key focus techniques that can help you capture the decisive moment and master the art of manual focusing. Prime lenses. Before we can look at the benefits of manual focus, we first have to discuss the use of prime lenses. The reason prime lenses have become a staple of street photographers is simple: speed. How to use Manual focus on Canon Powershot cameras - YouTube Click to view on Bing3:15In this example I'm using the Canon SX40, it's basically the same in all powershot cameras. Many people have issues using the Manual focus esp regarding macro shots.Author: NightShooter Web DevelopmentViews: 98K Using manual focus - lynda While autofocus is usually the most efficient setting for the Canon 5D Mark III, there are some situations where it makes more sense to use manual focus. It is also possible to set the Canon 5D Mark III so it will use a combination of autofocus and manual focus. You can learn more about using manual focus by watching this online video. 5 Situations When Manual Focus is Better than Auto Focus When is Manual Focus Better than Auto Focus? Let me start by saying there is no right or wrong time to use either manual or auto focusing – both can produce great results in almost all circumstances – however there are a few times when you might find it easier to switch to manual focusing: 1.