The Phone-O-Scope, by iPhone mod extraordinaire Bhautik Joshi, is an optical coupler which allows you to attach an SLR lens to your iPhone.
If you’ve been looking for a way to add some DSLR power to your camera phone, an app probably isn’t the way to go, especially when you can get the real thing with a roll of duct tape and a little tinkering. The lens adds some really powerful SLR features, such as vastly improved DOF.
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