OK, this actually exists. It looks like a parody product (Brants, anyone?) but I assure you, it is not. Keep reading to find out how it works.
The iPhone SLR adapter attaches to an iPhone 4, and lets you use either Canon EOS or Nikon SLR lenses. Any lens! Snap on your nifty fifty, or haul out the big telephoto lens — they’ll all work with your phone.
Now, I can’t help but wonder why you’d be carrying the adapter and a lens, but not your DSLR camera body. If you’re already schlepping gear, why not the camera itself? Are you a photo fanatic that would use this? I’m so curious!
Available at photojojo.