Like most full-size megazooms, the Z981 has semimanual and manual mode options. Shutter speeds can be set from 16 seconds to 1/2,000 second. Apertures include f2.8, f3.2, f3.5, f4, f4.5, f5, f5.6, f6.3, f7.1, and f8.0. With the lens fully extended, you just get five, though: f5.0, f5.6, f6.3, f7.1, and f8.0. Being able to control shutter speed is great for freezing or blurring motion; the aperture control gives you the ability to select how much of a scene you want in focus.