**Product Specifications:**

**Brand:** YONGNUO

**Model:** YN50MMF1.8S DFDSM

**Lens Type:** Full-frame standard prime lens

**Mount:** E-mount

**Auto Focus:** Yes

**Aperture:** F1.8

**Aperture Blades:** 9 rounded blades

**Motor:** DSM (Digital Stepping Motor)

**Weather Sealing:** Simple dust and splash resistance design

**Image Quality:** Soft and beautiful bokeh

**Customizable Function Buttons:** CD, FN

**Firmware Upgrade:** USB-C port for firmware updates

**Continuous Shooting Support:** AF-C high-speed continuous shooting

**Construction:** Compact and lightweight internal focusing design

**Material:** Aerospace-grade aluminum alloy

**Dimensions:** 68×85mm

**Weight:** Approximately 395g

**Additional Features:** MTF curve chart, lens structure diagram

**Package Contents:** Lens with one-time plastic sealing film

**Compatibility:** Canon and Nikon DSLRs with direct current motors; Sony mirrorless and Nikon Z-mount cameras with DSM motors

**Note:** While the lens mount has some water resistance, it is not completely waterproof. Avoid getting the lens wet during rainy conditions.

Please refer to the manufacturer's website or contact customer service for further details and inquiries.