A "fish eye" lens
Reveal answer
Fill a bubble to check yourself
A "fish eye" lens
is used strictly for underwater photography.
is an extreme wide angle lens.
is the usual choice of portrait photographers.
should never be used without a filter.
A fisheye lens is an extreme wide-angle lens that captures a very wide field of view (often 180 degrees or more) with significant barrel distortion, creating a curved, hemispherical appearance. They are not limited to underwater photography and are rarely used for portraits due to their extreme distortion.