Dulens APO Mini Prime 31mm T2.4 Lens (PL Mount)

Dulens 31mm PL apochromatic cine prime lens

The Dulens APO Mini Prime 31mm T2.4 Lens (PL Mount) is a high-performance apochromatic cine prime lens designed for professional digital cinematography. This prime offers a versatile natural field of view, making it an ideal choice for interviews, narrative scenes, and independent filmmaking seeking a classic aesthetic. Its apochromatic design ensures that color fringing is virtually nonexistent, providing crystal-clear images for modern high-resolution production and intensive shooting.

This professional prime features a durable all-metal housing that ensures long-term reliability on various professional sets from independent films to studio rigs. The optical design is optimized to provide razor-sharp images with beautiful circular bokeh, thanks to a multi-blade iris and specialized apochromatic elements. With unified gear positions and a consistent size across the series, it integrates seamlessly into PL-mount workflows, offering the efficiency and precision required for storytelling.

Dulens 31mm/APO Specifications

• Focal length: 31–31 mm equivalent coverage.
• Maximum aperture: T2.4 across the zoom range.
• Minimum focusing distance: 1.25 ft (0.38 m).
• 12 Elements in 9 Groups with high-quality optical glass construction.
• Robust metal housing for outdoor shooting environments.
• Best Application: Narrative Feature Films and Vintage Aesthetic Storytelling.
• Mount type: ARRI PL compatible with professional cinema cameras.
• 1-Year Limited Warranty

ARRI PL 31mm APO Cine

Proven in hundreds of real production counts for independent features, the Dulens series has established high reliability. Technical measurements confirm the T2.4 transmission provides consistent exposure and professional subject isolation for full-frame sensors. Industry endorsement from top-tier cinematographers confirms its status as an authoritative tool for digital cinema capture, satisfying the highest standards for 8K resolution and artistic flair for audiences.

Apochromatic Optical Design Construction

The technical definition using apochromatic (APO) design reduces chromatic aberration and color fringing significantly. Improved resolution ensures high contrast such as razor-sharp edge-to-edge clarity throughout the frame. Professional cinematographers benefit from this construction when capturing high-contrast interior shots. This precise engineering ensures that digital sensors capture pure and natural colors with absolute accuracy for professional grading across various production sets.

Constant T2.4 Aperture Implementation

The fast T2.4 aperture behavior enables consistent exposure control in low-light environments without introducing noise. High-quality eleven-blade circular bokeh creates pleasing background separation for aesthetic shots. Narrative cinematographers such as commercial directors rely on this feature for a clean and professional cinematic look. This aperture is perfectly balanced to provide a soft, expressive background while keeping the main subject sharp and consistent.

Manual Focus Autofocus System

The manual focus system provides tactile and precise focusing for professional cinema use. Industry-standard 0.8 MOD gears improve speed and accuracy for professional workflows on busy sets. Focus pullers benefit especially in scripted narrative scenarios where timing is essential. The smooth focus rotation across all lenses in the set provides ample space for fine-tuning focus during complex camera movements, ensuring every transition is perfectly timed for the professional narrative.

Compact All-Metal Cinema Chassis

The lens weighs 1.2 lb (550 g) with a barrel length of 5.9 in (149.8 mm). The rugged metal design adds durability for demanding production environments and extreme weather. Equipment managers value this when maintaining fleet longevity. Its standardized 72mm filter thread allows for quick filter changes without changing adapter rings, making it an efficient choice for large crews and fast-paced mobile filming globally for digital projects.

ARRI PL Compatibility and Adaptability

The ARRI PL mount attaches to professional cinema and mirrorless cameras. Professional mount adapter compatibility enables secure camera mounting and optical alignment for high-end rigs. Production houses often use adapters for diverse camera setups on different projects. This robust mount ensures that the lens remains perfectly centered and stable, even when using heavy lens support systems and high-torque wireless motors during capture on modern rigs.

Professional Narrative Video Deployment

The 31mm capability supports versatile tasks for professional directors of photography and cinematographers. Low distortion reduces spatial distortion in tight work settings and interior locations. Commercial cinematography thrives with this optical setup because it delivers broad perspectives. This deployment is ideal for feature films, fashion cinematography, and any production requiring the natural compression and professional bokeh effects of a standard prime.

Dulens 31mm APO Maintenance Protocol

Correct cleaning with microfiber cloths prevents abrasion on multi-coated optics and front glass elements. Hard-shell case storage keeps optics impact-protected during transportation to various film sets. Pro Tip: Keep the gears clean of grit before mounting to follow-focus motors to maintain the smooth rotation and long-term reliability. Includes a 1-year limited warranty for professional peace of mind, ensuring that mechanical gears perform reliably.