For APS-C Sensors, Mirrorless Only, T1.05 to T16, 90mm Front Diameter, 13 Iris Blades, 82mm Front Filter Threads, 270° Focus Rotation, Focus Scales in Feet and Meters. Sharp small robust and incredibly fast this 25mm T1.05 Vision Cine Lens from 7artisans is built for the cinema industry and works with standard cine lens accessories so it will easily fit into your workflow. This version of the lens comes in a Canon RF mount and it features focus scales marked in feet and meters. The maximum T1.05 aperture allows you to film a gentle soft bokeh with soft natural-looking out-of-focus highlights while the T16 minimum aperture helps reduce artifacts that can appear when the aperture opening is too small.The 270? focus throw allows you to make extremely accurate focus pulls and the lens features cine-standard 0.8 MOD lens gears for focus and iris. As part of the vision series this 25mm lens shares the same focus and iris gear positions as the Vision 35 and 50mm lenses making swapping lenses fast as you don't have to reposition the follow focus unit or lens motor you may be using. A 90mm front diameter allows you to use a variety of industry-standard matte boxes and the 82mm front filter thread allows you to mount optional filters directly on the front of the lens.