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NiSi 15mm f/4 Sunstar ASPH Lens for Sony E

BH #NI15SSSWASE • MFR #NISI-LENS-1540FE
NiSi 15mm f/4 Sunstar ASPH Lens for Sony E
Key Features
  • E-Mount Lens/Full-Frame Format
  • Aperture Range: f/4 to f/22
  • One Aspherical Element, Two ED Elements
  • Anti-Reflective & Hard Surface Coatings
Characterized by its ultra-wide field of view, the Sony E-mount NiSi 15mm f/4 Sunstar ASPH Lens is also distinguished by its distinct rendering of point light sources. Well-suited for landscapes, cityscapes, architectural, and interior applications, this ultra-wide-angle prime strays from the norm with a 10 straight bladed aperture design that promotes making clear 10-point sun stars from specular highlights throughout the aperture range. Optically, this lens sports a double-sided aspherical element and a pair of low dispersion glass elements, which help control a variety of aberrations and distortion for high sharpness, clarity, and accurate rendering. Both anti-reflective and protective coatings are featured, too, and the lens has a manual focus design with a 7.9" minimum focusing distance for working with close-up subjects.
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NiSi 15mm f/4 ASPH Overview

Characterized by its ultra-wide field of view, the Sony E-mount NiSi 15mm f/4 Sunstar ASPH Lens is also distinguished by its distinct rendering of point light sources. Well-suited for landscapes, cityscapes, architectural, and interior applications, this ultra-wide-angle prime strays from the norm with a 10 straight bladed aperture design that promotes making clear 10-point sun stars from specular highlights throughout the aperture range. Optically, this lens sports a double-sided aspherical element and a pair of low dispersion glass elements, which help control a variety of aberrations and distortion for high sharpness, clarity, and accurate rendering. Both anti-reflective and protective coatings are featured, too, and the lens has a manual focus design with a 7.9" minimum focusing distance for working with close-up subjects.

Ultra-wide prime is designed for full-frame Sony E-mount mirrorless cameras, however can also be used with APS-C models where it provides a 22.5mm equivalent focal length.
One double-sided aspherical element reduces distortion and spherical aberrations in order to achieve high sharpness and accurate rendering.
Two extra-low dispersion elements control color fringing and chromatic aberrations for accurate colors and high clarity.
Anti-reflective coating minimizes lens flare and ghosting for improved contrast when working in strong lighting conditions.
Hard surface coating protects the front element from markings and also adds a water-resistant finish.
Manual focus design permits working with subjects as close as 7.9" away.
Distinct 10 straight blade aperture design promotes making 10-point sun stars from specular highlights throughout the aperture range.

NiSi 15mm f/4 ASPH Specs

Focal Length15mm
Maximum Aperturef/4
Minimum Aperturef/22
Lens MountSony E
Lens Format CoverageFull-Frame
Angle of View112°
Minimum Focus Distance7.9" / 20 cm
Maximum Magnification0.13x
Optical Design12 Elements in 10 Groups
Diaphragm Blades10
Focus TypeManual Focus
Image StabilizationNo
Filter Size72 mm (Front)
Dimensions (ø x L)3 x 3.2" / 75.6 x 80.5 mm
Weight1 lb / 470 g
Packaging Info
Package Weight1.58 lb
Box Dimensions (LxWxH)6.9 x 4.9 x 4.9"

NiSi 15mm f/4 ASPH Reviews

Sharp and good color

By Peter
Rated 4 out of 5
Date: 2021-02-07

Received this lens in February and, as advertised, it makes very good sun stars at any aperture. The lens is sharp and the color good. The only major downside is presence of flare when shooting into the sun. Not unusual, but for a lens that features all-aperture sun stars a definite weakness. Carefully angling the lens when shooting into the sun usually helps avoid flare. Loss of contrast when shooting into the light, on the other hand, is not bad at all. Overall a pretty nice lens then, and definitely nice for the price.

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