Actually you can, but not in the way you are thinking of. Night portrait mode and portrait mode and some others don't allow digital zoom.

The camera comes with a lens cover in the box. ou could probably find some sort of case to protect the other 2.

I suggest that you buy the Coolpix L120. Great photos and superb HD movies begin with Nikon’s high power 21x wide-angle optical Zoom-NIKKOR glass lens. This powerful zoom lens, with a 25-525mm range equivalent, closes the distance between you and your subjects. Capture your son firing off the game-winning lacrosse shot or your daughter’s first ride on a two wheeler. Whether it’s a panoramic shot of the entire family on a favorite sledding hill, or a photo of your children playing in the backyard, you’ll shoot effortlessly and accurately with the COOLPIX L120.

If you’re new to photography, no worries, this camera has intelligent features to help you out. Five-way VR Image Stabilization uses sensor shift to minimize the effects of camera shake, virtually eliminating blurred images. Trick-or-treating with the kids? The COOLPIX L120 has a high ISO speed up to 6400 to capture fast moving or low-light scenarios.
Behind every great photo and HD movie is the COOLPIX L120, a camera brimming with technological advances. Smile Timer detects when a subject smiles and automatically takes the photo. Blink Warning identifies when a subject may have blinked and signals you to retake the shot. Face-Priority AF is an innovative face-identifying technology that detects and focuses up to 12 faces automatically.

Red-eye will no longer ruin family photos. In-camera Red-Eye Fix automatically fixes the problem before it occurs. Blotchy, uneven complexions are also a thing of the past with COOLPIX L120’s Skin Softening, which smoothes skin tones. This versatile camera also has 17 Scene Modes that adjust camera settings to selected scenes, assuring great pictures at school plays, backyard barbecues, or athletic events.