Rokinon 20mm T1.9 Cine DS Lens for Nikon F Mount
Ultra-Wide Cinema Prime for Creative Storytelling
The Rokinon 20mm T1.9 Cine DS Lens for Nikon F Mount is a high-quality wide-angle cinema prime lens designed for professional filmmakers demanding superb optical performance, robust build, and cinema-grade manual control. This lens offers an ultra-wide 94.8° diagonal field of view on full-frame Nikon DSLRs, making it ideal for immersive landscapes, architectural interiors, establishing shots, and dynamic environmental portraits.
Bright T1.9 Aperture for Low Light and Depth Control
The standout feature of this lens is its fast T1.9 aperture, which allows filmmakers to capture scenes in challenging low-light environments without sacrificing image quality. The wide aperture also provides creative control for shallow depth of field, enabling beautiful subject-background separation even with the ultra-wide angle perspective.
A rounded 8-blade iris diaphragm contributes to smooth, pleasing bokeh quality, essential for cinematic storytelling that requires natural-looking out-of-focus highlights.
Advanced Optics for Sharp, Clear Images
The lens is constructed with 13 complex glass elements arranged in 12 groups, including two hybrid aspherical lenses that effectively reduce chromatic aberrations, distortion, and flare. This optical design delivers sharp and detailed images with excellent contrast across the frame, supporting 4K and higher-resolution filming demands.
Ultra Multi Coating (UMC) is applied to the lens elements to minimize ghosting and flare, preserving color fidelity and saturation even in harsh or backlit lighting conditions.
Cinema-Grade Manual Controls for Precision
The Rokinon 20mm Cine DS lens includes industry-standard 0.8 pitch gear teeth on both focus and aperture rings. These gears are compatible with most follow focus units and iris motors, enabling fast and efficient focus and exposure adjustments on set.
The focus ring offers approximately 200 degrees of smooth, damped rotation, allowing exact control over focus pulls. The aperture ring features a clickless design giving filmmakers silent and fluid control over iris adjustments during filming, avoiding unwanted audio interference and flicker in exposures.
To improve workflow under cinema-style setups, the lens has dual-side focus distance and T-stop scales printed in glow-in-the-dark paint. This facilitates easy operation in low or zero-light conditions by both the camera operator and focus puller.
Practical Build and Design
With a robust all-metal construction, the lens is engineered to withstand professional use, balancing durability with ergonomic handling. Measuring 92.8mm in length and 117.6mm in diameter, it weighs approximately 935 grams, making it suitable for handheld, rigged, or stabilized setups.
The front element features a 77mm threaded filter ring for attaching various filters like ND or polarizers to aid creative light control. A removable petal-shaped lens hood provides additional flare reduction and protection.
Minimum Focusing Distance and Other Features
The lens can focus as close as 0.2 meters (7.8 inches), allowing creative compositions involving close foreground subjects alongside wide environmental backdrops.
Its full-frame image circle supports use on both full-frame and APS-C Nikon DSLRs, though with a tighter effective angle on APS-C sensors (approximately 66.9° diagonal field).
Summary Specifications
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Focal Length: 20mm
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Maximum Aperture: T1.9
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Optics: 13 elements in 12 groups (2 hybrid aspherical lenses)
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Iris Blades: 8 (rounded)
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Minimum Focusing Distance: 0.2 m (7.8 inches)
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Filter Thread: 77mm
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Lens Hood: Removable petal-shaped
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Focus Ring Rotation: Approx. 200°
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Mount: Nikon F
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Angle of View: 94.8° full frame, 66.9° APS-C
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Dimensions: 117.6mm diameter x 92.8mm length
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Weight: 935g
Why Choose MojoComputers?
MojoComputers offers authentic Rokinon Cine DS lenses with complete manufacturer warranty and expert customer support. They provide fast, insured shipping across the United States and competitive pricing, making them ideal for professional filmmakers outfitting their kits.
Conclusion
The Rokinon 20mm T1.9 Cine DS Lens for Nikon F Mount is a versatile and high-performing wide-angle lens engineered for cinematic storytelling. Its ultra-wide perspective, combined with a bright aperture and advanced optical coatings, delivers immersive visuals with precision and clarity.
Its cinema-grade gears and silent de-clicked aperture pave the way for seamless follow focus control and fluid exposure changes on set. The lens’s build quality, close focusing ability, and multi-format compatibility make it an indispensable tool for DSLR filmmakers requiring professional wide-angle optics.
Available now through MojoComputers, this lens is an excellent investment for Nikon shooters aiming to expand their creative range with a fast, wide, and reliable cine prime.
