Use a Water Drop As a Simple iPhone Macro Lens  Over on
Scientific American, photographer Alexander Wild has a great tip
for taking macro shots with your iPhone. Instead of buying a
special case or a clip-on lens accessory, just place a drop of
water over the lens and carefully invert your phone.  The
results are actually pretty impressive given the hack literally
only costs as much as a drop of water, but you'll have to be
careful when trying it out. Propping your phone up somewhere
secure is a good idea since even the slightest motions or
vibrations will cause the lens to jiggle. And, it goes without
saying that water and electronics are not good bedfellows, so be
extra careful when placing or removing the drop. [Scientific
American]  Photos: Alexander Wild