My name is Chris Perani I am a macro photographer who specializes in extreme macro with microscope objectives. Each image of a butterfly wing consists of 2,100 separate exposures merged into a single photo.
To photograph their wings I use a 10x microscope objective attached to a 200mm lens. Since I am using a microscope objective, the depth of field is almost nonexistent.
Using a focus rail, the lens must be moved no more than 3 microns per photo to achieve focus across the thickness of the subject which can be up to 8 millimeters. This yields 350 exposures, each with a sliver in focus, that must be composited together. This process yields one piece of 6 piece puzzle.