Rokinon DS50M

Full Frame Cine DS Lens

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The 50mm T1.5 AS UMC Cine DS Lens (Model DS50M) from Rokinon® is a fast manual focus prime lens.
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The 50mm T1.5 AS UMC Cine DS Lens (Model DS50M) from Rokinon® is a fast manual focus prime lens. This is available in two models - DS50M-C for Canon mounts and DS50M-MT for Micro 4/3 mounts.

This 50mm Cine DS Lens provides a very fast maximum aperture of T1.5 for effective low light capture and shallow depth of field control and an 8 blade iris for attractive bokeh. Optimized for cinema and video applications, the focus and aperture control rings are outfitted with industry standard gearing, which provides an interface for working with a traditional follow focus. The aperture control ring has also been de-clicked, which enables smooth iris pulls. In addition, bright aperture and distance markings are printed on the lens barrel facing laterally to facilitate easier control by a focus puller.

The DS50M has a minimum focus distance of 1.5' and its internal focusing minimizes the effects of lens breathing, which insures a more consistent angle-of-view when adjusting focus. The lens is composed of 9 elements in 6 groups, including one aspherical element and one hybrid aspherical element to reduce aberrations. In addition, a lens multi-coating helps to improve light transmission reducing flare and ghosting. The filter thread diameter is 77mm.

With this 50mm lens, Rokinon introduces the DS series of cinema lenses, unifying their cine lenses in more than just name. Each of the DS branded lenses will offer the same alignment of their geared focus and aperture rings so that follow focus and other rig accessories won't need re-adjustment when swapping lenses. Also, each DS lens is tested to be color matched with the other lenses in the series and provide the same color and contrast when shooting video. Lastly, the lenses are marked with focusing scales on each side of the barrel for easier adjustment from either side of the camera. 

Rokinon 50mm T1.5 Lens Features:

  • Standard length manual focus prime lens for EF mount cameras.
  • Functional as still photo lens but optimizedforcinema and video shooting with geared aperture and focus rings, de-clicked aperture for smooth exposure transitions and laterally printed aperture and distance markings. The 50mm T1.5 is part of the DS series of cine lenses, sharing characteristics and features that unify the series and make it easier for users to swap out lenses when shooting video. Each DS lens provides aligned focus and aperture rings so that readjustment of the follow focus is not necessary when switching lenses. Also each lens has been tested to match color and contrast for a consistent look and less potential post-processing. Finally, all DS lenses print focus scales on each side of the lens barrel for ease of use from both sides of the camera.
  • Very fast T1.5 maximum aperture for effective lowlight capture and shallow depth of field.
  • Internal focusing system with 9 lens elements in 6 groups.
  • One aspherical and one hybrid aspherical lens element control aberrations and improve sharpness throughout the frame.
  • Lens multi-coating improves light transmission and reduces flare and ghosting.
  • Minimum focus distance of 1.5'
  • Filter thread diameter of 77mm 

Rokinon 50mm T1.5 Lens Specifications:

  • Model: DS50M
  • Focal Length: 50mm
  • Maximum Aperture: T1.5
  • Coverage: Full Frame (FX)
  • Optical Construction: 9 Glass Elements In 6 Groups
  • Aperture Range: T1.5 to T22
  • Diaphragm Blades: 8
  • Coating: Ultra Multi-Coating
  • Minimum Focusing Distance: 17.7 ” (0.45m)
  • Filter Size: 77mm
  • Lens Hood: Removable Petal Shaped
  • Maximum Diameter: 3.21”(81.6mm)
  • Dimensions:
    • DS50M-C (Canon Mount):
      • Weight: 20.3oz (575g)
      • Length: 2.94” (74.7mm)
    • DS50M-MFT (Micro 4/3 Mount):
      • Weight: 20.8oz (590g)
      • Length: 3.92” (99.5mm)

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