If you want to try to capture some great fish eye effects with your iPhone 4 then this newly announced lens might just help you to do that. It is totally portable and detachable and also comes complete with a back cover that stays on your phone, then whenever you feel the urge to take a fisheye shot, just screw the lens into the cover. Take a look at the specificiation of the lens below. If you would like to order one you can do so here. They retail for $29.99 from usbfever.com – just click here to be redirected. They ship worldwide for only $2.99. Specification – Magnification: 190°…