Yongnuo YN 50mm f/1.8S DSM Lens
The Yongnuo YN 50mm f/1.8S DSM is a 50mm f/1.8 lens designed for Sony E mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Yongnuo YN 50mm f/1.8S DSM Lens
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Lens Overview — Yongnuo YN 50mm f/1.8S DSM
Key Features — Yongnuo YN 50mm f/1.8S DSM
50mm f/1.8 Prime: A standard focal length with a wide maximum aperture for subject separation and shooting in lower-light conditions.
Sony E-Mount, Full-Frame: Designed for full-frame Sony E-mount mirrorless cameras, with full sensor coverage on both full-frame and APS-C bodies.
Autofocus Support: Built-in autofocus motor enables AF operation on compatible Sony E-mount cameras alongside manual focus control.
146g Lightweight Build: At just 146g, this lens adds minimal weight and bulk to a mirrorless kit, making it practical for everyday carry.
49mm Filter Thread: A compact 49mm front thread keeps the cost of compatible filters, ND filters, and polarizers relatively low.
No Image Stabilization: The lens has no optical stabilization, so shooters will need to rely on in-body stabilization if their camera provides it.
Lens Specifications — Yongnuo YN 50mm f/1.8S DSM
| Spec | Detail |
|---|---|
| Use Cases | Travel |
| Lens Type | Prime |
| Format | Full Frame |
| Zoom/Prime | Prime |
| Focal Length | 50mm |
| Maximum Aperture | f/1.8 |
| Camera System | Mirrorless |
| Lens Mount | Sony E |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | None |
| Filter Thread | 49mm |
Description — Yongnuo YN 50mm f/1.8S DSM
The Yongnuo YN 50mm f/1.8S DSM is a 50mm standard prime lens designed for Sony E-mount mirrorless cameras with full-frame coverage. Its f/1.8 maximum aperture opens up creative possibilities with shallow depth of field and workable performance when light is limited. Weighing only 146g, it is a compact and travel-friendly addition to any Sony mirrorless kit without adding noticeable weight.
The lens supports both autofocus and manual focus, providing flexibility across a range of shooting styles and situations. A 49mm filter thread allows for easy integration of standard filters. It is worth noting that no image stabilization is present in this lens, so photographers shooting handheld in challenging conditions will need to account for that.
As a prime lens in the standard focal length range, it is purpose-built for consistent, distraction-free shooting where a single focal length encourages intentional composition.
Pros — Yongnuo YN 50mm f/1.8S DSM
- ✓Wide f/1.8 maximum aperture for subject separation and low-light shooting
- ✓Extremely lightweight at just 146g, ideal for compact mirrorless setups
- ✓Full-frame coverage on Sony E-mount ensures compatibility across the entire sensor
Cons — Yongnuo YN 50mm f/1.8S DSM
- ✗No image stabilization, requiring reliance on in-body stabilization or steady technique
- ✗Single mount option (Sony E) limits compatibility to one camera system
- ✗50mm prime offers no zoom flexibility — fixed focal length only
Videos — Yongnuo YN 50mm f/1.8S DSM
Yongnuo 50mm f/1.8 S DA DSM lens review - a budget option for Sony — Christopher Frost
Frequently Asked Questions — Yongnuo YN 50mm f/1.8S DSM
Is the Yongnuo YN 50mm f/1.8S DSM compatible with APS-C Sony E-mount cameras?+
Yes. The lens is designed with full-frame coverage on the Sony E mount, which means it will cover both full-frame and APS-C Sony E-mount mirrorless bodies without issue.
Does this lens have image stabilization?+
No. The specifications confirm image stabilization is listed as None. Shooters who need stabilization will need to rely on any in-body stabilization their Sony camera may provide.
What filter size does the Yongnuo YN 50mm f/1.8S DSM use?+
The lens uses a 49mm filter thread. This is a compact and common size, making compatible filters easy to find and relatively affordable.
How heavy is this lens?+
The lens weighs 146g, making it one of the lighter options in the standard prime category. This low weight makes it a practical choice for travel or everyday carry alongside a compact mirrorless body.
Does the lens support autofocus?+
Yes. The lens supports both autofocus and manual focus modes. Autofocus is confirmed in the specifications, giving photographers the option to switch between both depending on the shooting scenario.