Sigma 50mm T1.5 FF Cine

The Sigma 50mm T1.5 FF Cine is a high-speed prime lens designed for full-frame cinema cameras. Part of the FF High Speed Prime line, it features a fast T1.5 aperture for shallow depth of field and low-light performance. The lens is housed in a robust, all-metal cine-style body with standardised 0.8 mod gearing on the focus and iris rings, and 180 degrees of focus rotation. It provides sufficient resolution for 6K and 8K workflows while maintaining a compact form factor. When assessing a used copy, check the smoothness of the geared rings, as they should rotate without gritty spots or excessive resistance. Inspect the front and rear elements for scratches, particularly given the large front diameter. SDS verifies the iris operation for consistent movement and checks that there is no internal haze or fungal growth between the glass elements. Ensure the lens mount is secure and free from warping.