16mm F2.0

HIGH SPEED WIDE ANGLE

  • Internal Focus
  • Low Light
  • Low CA
  • Low Flare & Ghost
  • Low Coma

User manual can be downloaded here: Download

The 16mm f/2.0 ED AS UMC CS Lens from Rokinon is a manual focus wide-angle lens compatible with APS-C format DSLR digital cameras. It provides a 79.5° angle of view which translates into a 35mm format equivalency of 25.6mm. A fast maximum aperture of f/2.0 is effective in low light shooting and provides shallow depth of field. With two aspherical lens elements and one extra-low dispersion element, chromatic aberrations are minimized and sharp, color-accurate images are the result. UMC lens coating facilitates even light transmission and reduces ghosting and flare.


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  • Wide angle focal length equivalent to 25.6mm in the 35mm format

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  • Fast f/2.0 maximum aperture for effective low light shooting and shallow depth of field

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  • Aspherical and Extra-low Dispersion lens elements reduce aberrations

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  • UMC lens coating allows even light transmission and minimizes ghosting and flare





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Pentax K

Model: 16M-P
MSRP: $499
UPC: 0-84438-76130-6
Focal Length: 16mm
Maximum Aperture: F2.0
Coverage: APS-C/Four Thirds
Optical Construction: 13 Glass Elements In 11 Groups
Aperture Range: F2.0 to F22
Diaphragm Blades: 8
Coating: Ultra Multi-Coating
Minimum Focusing Distance: 7.9” (0.2m)
Filter Size: 77mm
Lens Hood: Removable Petal Shaped
Maximum Diameter: 3.27”(83mm)
Weight: 25.04oz (710g)
Length: 3.46” (87.9mm)
1. Rokinon MTF charts use theoretical equations to plot performance and do not rely on subjective 
opinion, subject matter, camera features, software or other factors. They plot the contrast and resolution of a lens from the center to its edges, against a "perfect" lens that would transmit 100% of the light that passes through it. The contrast of a lens is important because it directly relates to resolution.

3. Rokinon tests are carried out with the lens at its maximum (widest) aperture (Ex. 24mm F1.4 lens is measured at F1.4 for MTF).

4. Zero on the chart’s X-axis (horizontal axis) 
represents the center of the lens. As a line moves right, it indicates the change of contrast and sharpness from the center to the edge of the image. 

5. The Y-axis (vertical axis) plots the transmission of light through the lens. It has a maximum value of "1.0" to indicate 100% transmittance of the light, which is not possible to achieve. 

6. The blue graph lines (10 lines/mm) represent contrast measurement. The red graph lines (30 lines/mm) represent resolution.

7. Sagittal lines (thick lines) represent the contrast 
measurements of line pairs that are parallel to an imaginary diagonal line that runs from the bottom left hand corner to the top right hand corner of a image frame. Meridonial lines (thin lines) represent line pairs that are perpendicular to the imaginary diagonal line.

8. The higher and straighter the blue lines, the better the contrast. The higher and straighter the red lines, the better the resolution.