Modern Lenses. Timeless Look. The immersive Signature look is a combination warmth and natural detail that is flattering to skin tones, silky-smooth bokeh that enhances depth in every format, and best-in-class highlight and shadow retention. Full of life and character, Signature images are beautiful whatever the format, resolution, and deliverable requirements. ARRI Signature Primes and Signature Zooms cover a focal length range of 12 mm to 510 mm, which is the largest in the industry.