Overview

The Irix 15mm f/2.4 offers superb optics, with razor sharpness and excellent coma control for astrophotography. It has almost no distortion and easily corrected vignetting. The Blackstone version features a durable metal build with weather sealing and a smooth focus ring. Unique features include an infinity click and focus lock ring. It is a manual-focus lens with electronic aperture control. This lens suits landscape and astrophotographers seeking high quality at a reasonable price.