Proven optics
The IRIX 150mm T3.0 Telephoto Cine Lens is the first lens in a new line of full frame sensor cine lenses, ready for 8K UHD. It’s complex optical system is based on the same optical layout used in the Irix 150mm f/2.8 Macro 1:1. The lens consists of 12 optical elements arranged in 9 groups, four of which are high refractive index (HR) glass, and three low-dispersion glass (ED). Because of those elements, this lens offers superb high resolution, nearly zero chromatic aberration and has almost no visible distortion (as low as 0,1%). The optical system is equipped with an internal focusing system. The lens was designed to have as little breathing as possible.
Refined mechanics
For the camera operators, a good and tough housing is very important. Irix is known for fine mechanical constructions, and in the Cine range Irix pushed this even further, focussing on superb operation ergonomics and a high precision mechanism. Quiet and smooth rotation of the focus ring was achieved thanks to the new MST lens positioning system - created specially for the Irix Cine range. The Multi Start Thread mechanism, in combination with sealed housing, ensures durable and long-term operation of the lens in various atmospheric conditions even in the most demanding situations. The rotation angle of the focus ring is increased to 270 degrees, which makes focusing easy and accurate at any range. The lens will be available with both metric and imperial markings.
Highest attention has been paid to the aperture mechanism in these optics, where eleven iris blades with rounded edges create great bokeh and sharpness. The Irix Cine 150mm also significantly reduces the diffraction effect when filming at low aperture values. The de-clicked aperture ranges from T3.0 to T32. The aperture ring rotates 75 degrees.
