Wide-angle lenses suffer from barrel distortion and are therefore not used for conventional portraits. The best lenses for ...

Distortion is very reasonable for this type of lens, measuring -2.84% barrel at 15mm. By 20mm, the lens is almost perfectly rectilinear, measuring +0.10% pincushion. It is then pincushion all the ...

reducing to a virtually rectilinear -0.23% barrel at 20mm. Thereafter, we can measure pincushion distortion, +1.23% at 24mm and +1.54% at 28mm. Pincushion distortion in a wide-angle lens can look ...