The Samyang 24mm f/1.4 ED AS UMC Lens delivers a wide 84° view when used with a full-frame 35mm camera, 57.6° when used with an APS-C camera or 47.6º with Four-Thirds cameras. This lens has four low-dispersion (ED) glass elements and two aspheric elements that produce sharply defined images with a minimum of aberrations. The Samyang 24mm f/1.4 ED AS UMC Lens focuses as close as 9.84″ from the subject, giving you outstanding wide-angle close-up views. A multi-layered and anti-reflection UMC coating provides superb light transmission and reduced flaring. The Samyang 24mm f/1.4 ED AS UMC Lens is a manual focus lens.