The images illustrating Depth of Field show that an 18mm lens at an f 1.4 (at the same focusing distance) will have what important difference from a lens at an f 8.0?
An f 1.4 is has greater depth of field, while an f 8.0 has less depth of field
An f 1.4 has shallower depth of field, while an f 8.0 has greater depth of field