While many software applications allow you to customize photos captured with the built-in camera on an iPhone 4/4S, the Pro Classic Duo Kit for iPhone 4/4S from Schneider Optics is an external lens system that allows you to do just that while you're shooting images or videos.

First, the kit includes a case that snaps onto your phone. Then, you can attach either the wide-angle or telephoto lens to the case with a twist. Each lens uses a bayonet mount to securely fasten onto the case. Using these external lenses, you can shoot images and video with a wider angle of view and 2x macro capability.

Also included is a handle that allows you to get a steady hold on your phone while shooting. It can be attached to either the right or left side of the phone case. When you're not using them, you can store the lenses inside the handle. Or, you can mount the handle to a tripod for added stability. A lens cap is also provided that fits any of the iPro lenses.

Wide-Angle Lens
Provides an impressive 35% wider field of view with minimal distortion and edge-to-edge sharpness

Telephoto Lens
Get twice as close to your subjects with the 2x telephoto lens

Case for iPhone 4/4S
Uses a bayonet mount to attach lenses and integrates handle attachment points on both sides

Handle/Lens Case
Provides steady shots as a handle, stores lenses, and is also a tripod mount adapter