Freelensing is when you take a photo with your lens detached from your camera body. You unlock the lens and CAREFULLY pivot it anywhere from a few millimeters to several inches. Depending, the results will look like tilt shift or macro photography. And that makes sense, because a tilt shift lens works a lot like the technique described...though instead of laying down the cash for the traditionally expensive glass, you can capture the effect this way for free. Just keep in mind that light leaks come with the territory.
Now, a word of warning: Man wasn't meant to take photos like this. Beyond the obvious possibility of dropping your lens, you're also exposing your camera's internals to moisture and dust. Done properly, freelensing isn't much more risky than swapping out your lens. But I wouldn't recommend keeping that lens detached for very long. Plan your shot. Detach. Snag the shot. Seal the lens back on the camera."
"The Method
Freelensing is when you take a photo with your lens detached from your camera body. You unlock the lens and CAREFULLY pivot it anywhere from a few millimeters to several inches. Depending, the results will look like tilt shift or macro photography. And that makes sense, because a tilt shift lens works a lot like the technique described...though instead of laying down the cash for the traditionally expensive glass, you can capture the effect this way for free. Just keep in mind that light leaks come with the territory.
Now, a word of warning: Man wasn't meant to take photos like this. Beyond the obvious possibility of dropping your lens, you're also exposing your camera's internals to moisture and dust. Done properly, freelensing isn't much more risky than swapping out your lens. But I wouldn't recommend keeping that lens detached for very long. Plan your shot. Detach. Snag the shot. Seal the lens back on the camera."
(Courtesy of Mark Wilson - gizmodo.com)
Some more ... stuff:
"Freelensing Visual Guide"
Freelensing! Turn any Lens into a Tilt-Shift or Macro"