The Sigma T1.5 FF High-Speed 5 Fully Luminous Prime Lens Kit lets you frame the shot from different focal lengths. It includes five prime lenses of 20mm, 24mm, 35mm, 50mm, and 85mm focal lengths and a maximum aperture of T1.5. These lenses can be used with Sony E-mount mirrorless cameras. They have dedicated control rings for focus and iris. At the end of each ring, a resin dampener is fitted to suppress the metallic noise. The clickless iris ring also turns smoothly to prevent unwanted sounds. All the lenses have a 9-blade diaphragm that produces cinematic bokeh in the background. The 0.8 module gear pitch of the control ring enables the use of a follow focus unit. A variety of matte boxes or lens motors can be fixed to the lens' 95mm front diameter. The lens comes with a dust- and moisture-resistant metal body that follows the tradition of Sigma's renowned sports lenses. The included case has foam inlays that protect the lenses from impacts and bumps during transportation.