Wide-angle cinema lens Samyang V-AF 20mm T1.9 for Sony, manual control, autofocus support

Samyang V-AF 20mm T1.9 for Sony is a wide-angle cinema lens engineered for video and film production on Sony-mount cameras. Its 20mm focal length provides a broad field of view suitable for capturing landscapes, interiors and dynamic close-proximity scenes. The fast T1.9 aperture enables shallow depth of field and improved performance in low-light situations while preserving a cinematic rendering typical of professional cine lenses. The lens combines manual cinema-style focus and aperture rings with electronic communication that supports autofocus and in-camera metadata transmission on compatible Sony bodies.

Advantages

The lens offers a bright maximum aperture of T1.9 that balances depth-of-field control with usable exposure latitude in dim environments. Cinema-style mechanical controls deliver smooth, repeatable focus and aperture operation for video workflows, while electronic coupling provides lens information and optional autofocus support with compatible camera systems. Optical design minimizes aberrations and maintains consistent image quality across the frame, making it useful for narrative, documentary and commercial productions.

Suitable for

• Run-and-gun documentary and event filmmaking
• Landscape and establishing shots in narrative productions
• Interior and architecture video where wide coverage is needed
• Low-light shooting and handheld run sequences

Key specifications

• Focal length: 20mm (wide-angle)
• Maximum aperture: T1.9 for shallow depth of field and low-light capability
• Mount compatibility: Sony E-mount electronic communication
• Focus control: manual cinema-style focus ring with long rotation throw
• Aperture control: manual aperture ring with stepless iris operation and clickless design for smooth exposure changes
• Optical construction: multi-element design with coatings to reduce flare and ghosting
• Image circle: designed for full-frame sensor coverage
• Physical attributes: compact, cine-oriented form factor suitable for rigging with follow focus systems

How to use

Mount the lens to a compatible Sony camera and confirm electronic communication is enabled in the camera menu if autofocus or lens metadata are required. Use the manual focus ring for precise focus pulls; the cine-style long rotation provides fine control for repeatable focus shifts. Adjust the aperture via the stepless aperture ring to set exposure and control depth of field; the clickless design avoids sudden changes in audio-sensitive scenes. When autofocus support is available, verify AF response and limits in-camera before critical takes.

Usage recommendations

For best results in professional video, pair the lens with a camera body that supports electronic lens control to access autofocus functions and record lens metadata. Use follow focus accessories for repeatable focus pulls, and consider ND filtration when shooting wide open at T1.9 in bright conditions to maintain the desired exposure and shallow depth of field.