What We Like
+Exceptional 185° angle of view delivers dramatic fisheye perspective in compact, lightweight package
+Bright f/2.8 aperture excels for astrophotography and low-light landscape photography
+Improved Mark II optical design with dual ED elements and 10-blade aperture produces excellent image quality and pronounced sunstars
+Extremely affordable at $278, significantly cheaper than manufacturer alternatives like the $1,999 Sigma 15mm f/1.4
+Versatile multi-mount availability (Sony E, Canon RF, Nikon Z, Leica L) with fully manual operation
+Excellent build quality with metal construction, smooth damped focus/aperture rings, and fluorescent markings for night shooting
Worth Knowing
−Manual focus only may require practice for precise focusing at close distances (0.15m minimum)
−No EXIF data recorded by lens, requiring manual metadata entry in image files
−Cannot accommodate front or rear filter threads, limiting filter options for astrophotography and video
−Extreme curvature of field at very close focus distances requires stopping down for optimal sharpness