Low Light-
Shooting in dark/dull places can cause difficulty for some cameras lenses when they are trying to focus. You will know if your camera is struggling in auto mode when you go to take a shot, the lens will whirl from 1 end of its focusing options to the other before deciding on where to focus. Switch to manual mode and you can quickly find your focusing point and get the shot you are looking for.
Manual Focus- Macro work. When doing macro photography you can almost use manual
focus. The narrow depth of field in these shots mean that you need to be precise
with focusing and being just a smidgen out or having your camera choose to
focus on the wrong part of your subject can ruin your shot. You would want to
use a tripod to stop movement of the camera, this can make focusing in either
manual or auto mode frustrating. When you use manual focus you have all control
in your hands when you use this precise setting.
focus. The narrow depth of field in these shots mean that you need to be precise
with focusing and being just a smidgen out or having your camera choose to
focus on the wrong part of your subject can ruin your shot. You would want to
use a tripod to stop movement of the camera, this can make focusing in either
manual or auto mode frustrating. When you use manual focus you have all control
in your hands when you use this precise setting.