
Rokinon
Rokinon DS50M-NEX Cine DS 50mm T1.5 Sony E-Mount Lens
★★★★★
Professional cine-style 50mm T1.5 lens with unified gears and color-matched optics for Sony E-mount filmmakers.
$349.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.
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Overview
Key Features
Full frame coverage with aperture range of T1.5 - T22
New DS line that is color matched with other Rokinon DS lenses and have unified gear and aperture positions among all Rokinon Cine DS lenses
46.2 degrees angle of view on full frame cameras & 30.8 degrees angle of view on APS-C
Minimum focusing distance of 1.45 ft.; Uses filter size of 77mm
Specifications
Focal Length
50mm
Maximum Aperture
T1.5
Minimum Aperture
T22
Mount
Sony E-Mount (NEX)
Sensor Coverage
Full Frame
Angle of View (Full Frame)
46.2°
Angle of View (APS-C)
30.8°
Minimum Focusing Distance
1.45 ft
Filter Size
77mm
Focusing Scales
Dual (both sides)
Gear Type
Unified with Cine DS series
Pros & Cons
👍 Pros
- Ultra-fast T1.5 aperture allows exceptional low-light performance and shallow depth of field
- Unified gear positions across the Cine DS line make multi-lens setups efficient on set
- Color-matched optics ensure consistent look when intercut with other Rokinon DS lenses
- Dual-sided focusing scales allow the focus puller to read distance from either side of the camera
- Full-frame coverage works on both APS-C and full-frame Sony E-mount bodies
👎 Cons
- Fully manual focus only — no autofocus option for stills or run-and-gun video
- Heavier and bulkier than comparable photography-oriented 50mm lenses due to cine housing
- No electronic communication with the camera body, so no EXIF data is recorded
- Minimum focusing distance of 1.45 feet may not be close enough for tight detail shots
Frequently Asked Questions
What does T1.5 mean compared to a regular f-stop?
T-stops measure actual light transmission through the lens, unlike f-stops which are a theoretical calculation. T1.5 means this lens transmits light very efficiently, giving you reliable and consistent exposure — critical for cinema work.
Are the focus and aperture gears compatible with standard follow focus systems?
Yes, the Rokinon Cine DS line features unified gear positions for both focus and aperture rings across the entire DS lens series, allowing you to swap lenses on a follow focus rig without repositioning your gears.
Does this lens have autofocus?
No, this is a fully manual focus cinema lens. The long focus throw is designed for precise, repeatable manual focus pulls during video production.
Can I use this lens on both full-frame and APS-C Sony cameras?
Yes, this lens provides full-frame coverage with a 46.2-degree angle of view on full-frame bodies and a 30.8-degree angle of view on APS-C sensors.
Is this lens color-matched to other Rokinon lenses?
Yes, the Cine DS series is specifically color-matched so you get consistent color and contrast when cutting between different focal lengths in the same lineup.