I saw this on Facebook, someone had shared it with us and found it so helpful that I thought I would share it with you all.
We all use the push the shutter halfway down to focus, but there is a better way to get the job done. By setting up our cameras to use the back button, we allow the camera do lock in our focus or keep focusing with just a push of the button and still have full control of the shutter at the same time. This might even help us more when we are using a remote trigger when shooting on a tripod. Here is the link to Steve Perry’s You Tube Video.