adjective. Of or being a wide-angle photographic lens that covers an angle of about 180°, producing a circular image with exaggerated foreshortening in the center and increasing distortion toward the periphery.

noun. An unfriendly or suspicious glance.

noun. An undesirable effect in paint, particularly automotive finishes, normally caused by oil or other contaminants on the painted surface.

adjective. Covering an extremely wide angle and producing a circular image that is distorted towards the edges.

adjective. of or relating to a fisheye lens

"Keep in mind, too, that a wide angle lens - and the fisheye is the epitome of a wide angle lens - normally has a really large DoF, so most of the time if you're just snapshooting at things farther than, say, 5 feet away, you don't have much to worry about."

Boyle  Dave  Debbie  achromatic  auto-focus