cross-posted from: https://lemmy.ml/post/3521780

‘…Perani uses a 10x microscope objective attached to a 200mm lens, which creates an almost nonexistent depth of field. “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,”…’

More here, plus additional images on his website