NiSi Aureus Prime 50mm T1.4 (PL-Mount)

Engineered for consistent sharpness, contrast, and color reproduction, the NiSi AUREUS PRIME 50mm T1.4 is an ARRI PL-mount cinema lens that delivers clean images, ideal for digital post-production workflows. Its 11-blade iris creates natural background blur and smooth, rounded bokeh while ensuring a crystal-clear view of the subject in focus. With minimal focus breathing and 300° focus throw rotation, the AUREUS PRIME delivers precise depth control for dynamic compositions.

Featuring an ultrafast T1.4 maximum aperture and glow-in-the-dark markings, the lens excels in low-light conditions. Its ultra-low dispersion elements and advanced coatings minimize chromatic aberration, distortion, color fringing, flaring, and ghosting, maintaining reliable color rendering and contrast. The lens sports a 90mm front outside diameter, an 86mm front filter thread, and a built-in rear filter holder, allowing the integration of lightweight filtration close to the camera body for balance-dependent setups.

The AUREUS PRIME line features uniform housing, weight, and gear positioning, allowing each focal length to be swapped without needing stabilizer rebalancing or camera rig adjustment. They also share similar optical and tonal characteristics with the NiSi ATHENA PRIME lens line, allowing their incorporation into existing lens sets.

Precise Optics

• Versatile 50mm focal length ideal for a variety of compositions
• 46mm image circle covers full-frame and large-format sensors
• T1.4 to T22 aperture ensures precise depth control and low-light performance
• 11-blade iris creates smooth, rounded bokeh and a soft background
• Stable 300° focus throw and minimized focus breathing

Consistent Images

• Ultra-low dispersion elements for sharp, clean images
• Reduced chromatic aberration, distortion, and color fringing
• Advanced coatings reduce flares and ghosting
• Consistent contrast and neutral color rendering

Practical Compatibility

• Uniform gear positions across the AUREUS line for quick lens swapping
• 86mm front filter thread and built-in rear filter holder
• User-changeable imperial and metric focus scales included
• Glow-in-the-dark markings for low-light usability