Ricoh has just released its Pentax WG-8 weatherproof ... The five times optical zoom lens has a focal-length coverage from 5mm to 25mm, which is equivalent to approximately 28mm to 140mm in ...

For this review, the lens was tested on a Pentax K-1 using Imatest. Barrel Distortion is present throughout the range, measuring -3.32% at 20mm, -2.39% at 24mm, -1.46% at 28mm and -0.63% at 35mm.