HeliconFocus is a program that creates one completely focused image from several partially focused images by combining the focused areas.

The program is designed for macrophotography, microphotography and hyperfocal landscape photography to cope with the shallow depth-of-field problem.

Helicon Focus also aligns images as objects often change their size and position from shot to shot. This function is especially important for macrophotography.


http://www.heliconfilter.com/pages/focus_overview.html