Overview

The Pentax 03 Fish-Eye 3.2mm f/5.6 for Pentax Q offers a 160° field of view (17.6mm equivalent) with good build quality in a tiny, 29g alloy barrel on a plastic mount. Its fixed f/5.6 aperture and manual focus require care due to deep depth-of-field (equivalent to f/30), but close focus to 10cm enables creative shots. Optical strengths include unique fisheye distortion; weaknesses are limited by the small sensor and lack of autofocus. It suits Q system users wanting an ultra-wide, compact fisheye for deliberate, close-up compositions.