This is one of the only Super Speed zoom lenses in the world. It’s small and light enough for handheld work. It has excellent close-focus, and really well-controlled focus breathing. It will deliver beautiful lens flares, and it’s as sharp as a primes lens, even at T1.6, which is unheard of for a zoom. In Super-16, 10-30mm is the equivalent field of view of 20-60mm in Super-35. So you have a lens that gives you the most commonly used focal lengths at T1.6 in a relatively small package. The Cooke 10-30mm T1.6 has much of the same optical DNA of the legendary Cooke 20-60mm T3.1, but its redesigned rear optical group shrinks the image circle down to Super 16 format, and improves the max T-stop to an impressive T1.6. What that means is that you get the same field of view, depth of field, quality, and flares of the Cooke 20-60mm, but for the super 16 format.