CSLA is proud to offer this one-of-kind lens set.  We’ve re-engineered a classic medium format lens, adding additional optics and a unique de-tuning ring, while maintaining the perfect balance of character and performance.  These lenses work in 2 modes and can cover Large Format (Alexa Mini LF / Sony Venice) or 65mm Format (Alexa 265).  3 prototypes are available now for rental, while the remaining set will be completed in 2026.

The most unique feature of the set is a de-tuning ring that rotates from 0 (no de-tune) to 5 (max detune).  Dial up the de-tune ring to create increased swirl to the bokeh, softer edges (while maintaining a sharp center), and a slightly more bloomed image.

What is a de-tune? It involves air gap changes between elements that introduce aberrations that are normally avoided with modern optical designs.