NiSi 15mm f/4 Sunstar
The NiSi 15mm f/4 Sunstar is a 15mm f/4 lens designed for Sony E, Canon RF, Nikon Z, Fujifilm X mount cameras. Used copies start from $98.94 on GearFocus, with buyer protection on every purchase.

NiSi 15mm f/4 Sunstar
Used NiSi 15mm f/4 Sunstar Listings on GearFocus
Lens Overview — NiSi 15mm f/4 Sunstar
Key Features — NiSi 15mm f/4 Sunstar
15mm Full-Frame Prime: A fixed ultrawide focal length with full-frame coverage, well-suited for landscape, architectural, and environmental photography.
f/4 Maximum Aperture: Consistent f/4 aperture across the frame keeps the optical design compact and straightforward.
Sunstar Aperture Rendering: Designed to produce distinct, sharp starburst effects on point light sources when stopped down — a signature characteristic of this lens.
Manual Focus Only: No autofocus motor means the lens is built for deliberate, hands-on shooting where the photographer controls focus directly.
Four-Mount Compatibility: Available in Sony E, Canon RF, Nikon Z, and Fujifilm X mounts, covering the major mirrorless ecosystems.
72mm Filter Thread: Standard front thread size makes it straightforward to attach screw-in ND, polarizer, and graduated filters for landscape work.
Lens Specifications — NiSi 15mm f/4 Sunstar
| Spec | Detail |
|---|---|
| Use Cases | Travel, Astrophotography |
| Lens Type | Wide-Angle |
| Format | Full Frame |
| Zoom/Prime | Prime |
| Focal Length | 15mm |
| Maximum Aperture | f/4 |
| Camera System | Mirrorless |
| Lens Mount | Sony E, Canon RF, Nikon Z, Fujifilm X |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Filter Thread | 72mm |
Description — NiSi 15mm f/4 Sunstar
The NiSi 15mm f/4 Sunstar is a manual focus, wide-angle prime lens designed for full-frame mirrorless camera systems. With a fixed 15mm focal length and a maximum aperture of f/4, it delivers a broad field of view suited to landscapes, interiors, and environmental scenes. The lens is offered in four mount configurations — Sony E, Canon RF, Nikon Z, and Fujifilm X — giving photographers flexibility to pair it with their existing mirrorless body without adapters.
Weighing in at 470g and featuring a 72mm filter thread, it strikes a practical balance between portability and filter usability. Since the lens is rated for full-frame coverage, it is equally at home on APS-C bodies in mounts like Fujifilm X. Focus is entirely manual, with no autofocus or image stabilization on offer, placing creative control squarely in the photographer's hands.
This is a lens for shooters who value optical simplicity and deliberate technique over automation.
Pros — NiSi 15mm f/4 Sunstar
- ✓Broad mirrorless compatibility — available in Sony E, Canon RF, Nikon Z, and Fujifilm X mounts
- ✓Full-frame coverage at 15mm makes it usable across both full-frame and APS-C sensor systems
- ✓72mm filter thread accommodates standard screw-in filters for landscape and ND work
Cons — NiSi 15mm f/4 Sunstar
- ✗Manual focus only — no autofocus support, which may limit usability for action or fast-paced shooting
- ✗No image stabilization, requiring steady technique or a tripod in low light at 15mm
- ✗Maximum aperture of f/4 is modest for a wide-angle prime, limiting low-light performance compared to faster alternatives
Videos — NiSi 15mm f/4 Sunstar
Ultra Wide Angle Fun For Less Bucks - NiSi 15mm f/4 ASPH hands-on KAI5 — Kai W







