NiSi Lens 15mm F4 Fuji X-Mount

NiSi Lens 15mm F4 Fuji X-Mount – 112° Ultra-Wide Field of View for Mirrorless Cameras

This NiSi 15mm F4 lens for Fuji X-mount delivers an ultra-wide 112° field of view, making it well suited for mirrorless cameras. It weighs 470 grams and offers a compact, portable option for a range of photographic applications including nature, astrophotography, street, action, and creative portrait work with an ultra-wide look.

Design and build quality

The lens uses an all-metal construction to provide durability and safety even in harsher environments. Therefore, you can rely on a robust housing when shooting outdoors.

Additionally, the focus ring runs on a ball bearing for smooth, comfortable, and accurate manual adjustments. Both the front and rear elements receive matt paint anti-reflection treatment to reduce glare from reflected light on the lens surfaces.

Optical construction and performance

The optical design consists of 12 elements arranged in 10 groups. It includes one double-sided aspherical element and two extra-low dispersion elements to improve image quality.

Thanks to this optical layout and coatings, the lens produces minimal chromatic aberration, distortion, and vignetting. Moreover, the lens applies anti-reflection film technology to improve light transmittance and to reduce lens flare and stray light for cleaner contrast and color.

Aperture, starbursts and close focusing

The lens uses ten straight aperture blades. As a result, it can produce starburst effects from f/4 to f/22. Notably, the optical construction is claimed to generate these starbursts without glare.

For creative foreground work, the lens focuses down to a minimum distance of 0.2 m, which helps you capture striking close-up subjects while still showing expansive backgrounds.

Filters and accessory compatibility

The front of the lens features a 72 mm filter thread, allowing the use of standard 72 mm circular filters. In addition, the lens supports NiSi’s 100 mm filter holder systems, enabling larger filter workflows and graduated or square filters when needed.

Who this lens is for

Use this lens when you need a wide field of view and compact portability. Typical applications include:

• Nature and landscape photography
• Astrophotography, where the wide angle helps capture large sky areas
• Street and action photography that benefit from an expansive perspective
• Creative portraits that employ an ultra-wide look for dramatic foreground emphasis

Key specifications

• Great optical performance
• 10 straight aperture blades; the lens can produce starbursts from f/4 to f/22
• Optical construction: 12 elements in 10 groups with one double-sided aspherical element and two extra-low dispersion elements
• Minimum focal distance: 0.2 m
• 72 mm front thread for standard filters

FAQ

Question: Is this lens compatible with Fuji X-mount cameras?
Answer: Yes, the lens is specified for Fuji X-Mount.

Question: What filter options can I use on this lens?
Answer: The front has a 72 mm thread for standard circular filters and it also supports NiSi’s 100 mm filter holder systems for larger or square filters.

Question: At what apertures can I create starbursts with this lens?
Answer: The lens can produce starbursts from f/4 through f/22 thanks to its ten straight aperture blades, and the optical construction is designed to avoid glare in those starbursts.

Question: How close can I focus with this lens for creative foregrounds?
Answer: The minimum focus distance is 0.2 m, which lets you capture close subjects with a dramatic ultra-wide perspective.

Question: How does the lens perform in terms of chromatic aberration, distortion, and flare?
Answer: The optical design with extra-low dispersion elements and anti-reflection film reduces chromatic aberration, distortion, and flare, delivering cleaner images with minimal vignette.