Want a more hang way to apply a phone lens to your iPhone 4 for some creative shoots. Take a look at the Olloclip iPhone lens, maybe it can meet your requirements.
The Olloclip is a versatile phone lens kit designed for iPhone 4 and iPhone 4S without a protective case. As we can see from the images, Olloclip iPhone lens features ultra portable design, and comes with three lenses including a fisheye lens and a combo of wide angle lens and macro lens in order to feed your creativity, moreover, the simple but useful clip allows you quickly slip onto the corner of your iPhone 4 for capturing wonderful moments, and you can easily switch the lenses placed on each side of the clip. Apart from that, the iPhone lens are made from high quality glass for sharp photos and videos, and ships with a carrying bag and lens caps for each lens
The Olloclip 3-in-1 iPhone lens is priced at $70 USD. If you’re interested, jump to Photojojo for more details.