The best method for setting proper focus depends on whether you’re using a camcorder, a dslr, or even a smartphone. Let’s start with a camcorder Once your camera and subject are positioned, zoom into the point of your subject that needs critical focus. If your subject is a person, the eyes are typically the best choice. While fully zoomed in, use the focus control to achieve a sharp image, then zoom back out to reframe your shot. On a dslr, position the rectangle around the area of critical focus, or if you can’t move the rectangle, place the area of critical focus in the center of your shot. Now press the magnifier button until you achieve maximum magnification. adjust the focus control until it’s sharp, then reduce magnification to normal and reframe your shot. On a smartphone, you can typically lock focus in by touching and holding on the point of critical focus. Note that without a decent video app, this will often adjust exposure using the same point as a reference. You can use a video app to allow separate reference points for locking focus and exposure separately. Once you’ve got your initial focus set, you’ll need to be prepared to change your focus as your shooting. From the shooting position behind the camera, turning the focus knob clockwise will move your focus point closer to you, and turning it counterclockwise will move the focus point further away. It’s important to note than as your focus point gets closer to the camera, you’ll need to turn the ring exponentially more to maintain focus, while adjusting the focus point further away requires exponentially less of a turn to maintain focus. Some cameras will have a focus assist control to help you identify the areas that are in sharp focus. This will typically show a black and white preview in your monitor, and use colored lines to indicate the areas of your shot that are in focus. there may even be a dedicated button to toggle the focus assist on and off for ease of use. With proper focusing techniques, and a little help from the right tools, You can keep your subject sharp with confidence.