Overview

The Lensbaby Circular Fisheye 5.8mm f/3.5 offers excellent central sharpness from f/3.5, with edge sharpness improving to very good at f/11. Chromatic aberration and flare are present but typical for fisheyes. Build quality is decent but plasticky, with a loose focus ring that can shift and gritty feel. It suits creative photographers seeking fun, affordable circular fisheye effects, though manual focus and lack of automation require patience.