Nikon Nikkor 50mm f/1.8 Ai-S Lens
The Nikon 50mm f/1.8 Ai-S is a 50mm f/1.8 lens designed for Nikon F mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Nikon Nikkor 50mm f/1.8 Ai-S Lens
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Lens Overview — Nikon 50mm f/1.8 Ai-S
Key Features — Nikon 50mm f/1.8 Ai-S
50mm f/1.8 Aperture: A fast f/1.8 maximum aperture allows for shooting in lower light and provides noticeable background separation at standard focal length.
Nikon F Mount: Compatible with a broad range of Nikon F-mount film and DSLR bodies, including full-frame and APS-C cameras.
Full-Frame Coverage: Projects an image circle covering full-frame sensors and 35mm film planes, with no vignetting on larger format bodies.
Ai-S Manual Focus: Ai-S indexing ensures accurate metering compatibility with Nikon bodies that support the Ai coupling system.
Fully Manual Focus: No autofocus motor means direct, tactile control over focus — well suited to deliberate shooting and film workflows.
Lightweight 160g Build: At just 160g, the lens adds minimal weight and bulk to any Nikon F-mount camera body.
Lens Specifications — Nikon 50mm f/1.8 Ai-S
| Spec | Detail |
|---|---|
| Use Cases | Portrait, Street, Creative Effects |
| Lens Type | Prime |
| Format | Full Frame |
| Zoom/Prime | Prime |
| Focal Length | 50mm |
| Maximum Aperture | f/1.8 |
| Camera System | DSLR |
| Lens Mount | Nikon F |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Filter Thread | 52mm |
Description — Nikon 50mm f/1.8 Ai-S
The Nikon Nikkor 50mm f/1.8 Ai-S is a manual focus prime lens mounted on the Nikon F system, built to cover a full-frame image circle. Its f/1.8 maximum aperture gives photographers meaningful flexibility in varying light conditions and opens up shallower depth-of-field possibilities within the standard focal length range. At a focal length of 50mm, the lens sits in the standard range — a practical choice that translates well across many types of subjects and compositions.
Weighing only 250g, it is a genuinely lightweight option that pairs well with both compact and larger Nikon F-mount bodies without adding unnecessary heft. The 52mm filter thread is a common standard, making it straightforward to pair with a wide range of filter systems. There is no image stabilization, and focus is handled entirely by the photographer through manual adjustment — an approach that suits deliberate, considered shooting styles.
For those seeking a light, capable standard prime on the Nikon F platform with manual control, this lens is a solid and well-specified choice.
Pros — Nikon 50mm f/1.8 Ai-S
- ✓Wide f/1.8 maximum aperture supports shooting in lower light conditions
- ✓Full-frame lens format ensures compatibility with both full-frame and smaller Nikon F-mount bodies
- ✓Lightweight at just 250g, adding minimal bulk to any kit
Cons — Nikon 50mm f/1.8 Ai-S
- ✗Manual focus only — no autofocus support, which may be limiting for fast-moving subjects
- ✗No image stabilization, requiring steady technique especially at wider apertures
- ✗Nikon F-mount restricts use to compatible bodies without an adapter
Videos — Nikon 50mm f/1.8 Ai-S
Manual Focus Nikkor Primes — Steve O'Nions