Zoom lenses are expensive. Telephotos lenses are really expensive. But if you want to shove a little extra optical oomph into you camera, this 2x $50 telephoto adapter is a killer deal. Just screw 'er on and shoot.
It's as easy as it is cheap—each lens adapter is made for whichever lens you're seating it on—77 through 49 mm threads—and about doubles the focal length of your cam. A 50mm lens becomes a 105mm, pretty much. And for $50, that ain't bad! The thing is pretty, cheap, and portable—three wonderful adjectives, and rare when it comes to photography. [Photojojo]