2 A B C D E F G H I K L M N O P R S T U V W

equal area

equal area lenses are a type of fisheye lenses

equal area lenses are also called “equisolid angle” or “flächentreu”

Equal area lenses use a image mapping function of the type

r = 2 f sin \frac{\theta}{2}

such lenses maintain areas. Objects that have the same area have images of the same area.

typical angles:
weak medium strong max
94 131 180 360

Fisheye Types