Perhaps the most interesting spin-off of the Galaxy S4 is the Galaxy S4 Zoom. Essentially a Galaxy S4 with a point-and-shoot camera slapped on the back, the Zoom packs a 10x optical zoom lens and 16-megapixel sensor. The Zoom's camera also includes a Xenon flash rather than the LED flash found on the standard S4.
Beyond its camera, the Zoom features a the same 1.5-GHz quad-core processor found in the S4 Mini, 1.5GB of RAM rather than the 2GB found in the standard S4 and 8GB of storage that you can supplement with up to a 64GB microSD card. Like the S4 Mini, the Zoom also includes a smaller 4.3-inch 960 x 540 Super AMOLED display, though the Zoom packs a larger 2,330mAh battery.
All of those specialized camera components increase the S4 Zoom's weight to 7.3 ounces, a large jump from the standard S4's 4.6 ounces.