Depth of Field

I corrected the non-graded quiz and thought this link might help explain the difference between depth of field and focus.

http://www.cambridgeincolour.com/tutorials/depth-of-field.htm

We can go over this more in class too.

Also: a definition of focal plane: The plane or surface on which a focused image forms a sharp image. Also called the film plane. More on this in class Thursday.