Why did the photography teacher tell us to take pictures manually?

Manual focusing is a basic skill that photographers need to master. Familiar with manual focusing and skilled use of manual focusing will bring convenience and success rate to some shooting.

1, when autofocus is difficult, the ambient light is dark and the contrast is small. , autofocus began to hesitate, pull the bellows. Manual focusing is very convenient.

2, special composition, the focus can not be accurately covered, such as scenery films.

3, later needs, such as HDR synthesis, if autofocus, may lead to differences before and after, "double eyelids" phenomenon.

4, accurate focus, when people take pictures, the autofocus point is difficult to be accurate, focusing on eyebrows or eyeballs, macro photography is also very different.

In other cases, autofocus will be at a loss through glass or water.