The 15.5 to 45mm Alura features a fast T2.8 to T22 aperture range throughout its zoom range and cine-style lens ergonomics. Both the 15.5 to 45mm and 30 to 80mm Alura lenses are designed with color characteristics to match ARRI's wide selection of existing lenses.

The Alura's optical features include high resolution and contrast performance, a multilayer coating to reduce flares and veiling, reduced chromatic aberration, and minimized breathing while focusing. A nine-blade iris produces a rounded, natural-looking bokeh (out-of-focus highlights). The lens also supports the ARRI Lens Data System (LDS) that can communicate lens data electronically to compatible cameras and devices, such as focus mapping, tracking, and distance measurement.

The focus, zoom, and iris barrels are compatible with 0.8 MOD gears for interfacing with industry-standard lens accessories such as follow focus units and wireless FIZ controls. For easier focus pulling, large focus scales are placed on both sides of the lens barrel. Marked in feet, the focus scales can be quickly changed to meters by an authorized ARRI service provider. Exchangeable front and rear elements are easily serviced and can potentially extend the life of your Alura.