Freelensers simply hold unattached lenses in front their camera’s exposed sensor, and delicately tilt it until focus emerges.
Hand-manipulating a lens will reinvent your focal plane, producing amazing macro and tilt-shift effects that were previously only possible with special glass.
And more importantly, it will reinvent your concept of the universe. Or at least, tilt it slightly.

find below four example picture from my freelensing experiment.