The 16mm f/2.0 ED AS UMC CS Lens for Samsung NX Mount from Bower is a manual focus wide-angle prime lens compatible with Samsung NX APS-C format mirrorless digital cameras. It provides a 79° angle of view which translates into a 35mm format focal length equivalency of 24mm. 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 high index extra-low dispersion glass, chromatic aberrations are minimized and sharp, color-accurate images are the result. Full multi-coating facilitates even light transmission and reduces ghosting and flares.

Samsung NX Mount/APS-C Format    24mm (35mm Equivalent)    Aperture Range: f/2.0-22    Two Aspherical Lens Elements    High Index Low Dispersion Glass    Multi-coated Optical Glass    Minimum Focus Distance: 7.8"    Manual Focus

Wide angle focal length equivalent to 24mm in the 35mm format

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

Two aspherical elements and high index low dispersion optical glass reduce aberrations.

Lens multi-coating allows even light transmission and minimizes ghosting and flares.

Related Questions and Answers

Q: 1. Will this manual lens be suitable for nighttime wide angle astrophotography for a Canon T3i DSLR?

A: Most zooms have maximum apertures of f:3.5 to f:4.0. With this opening at f:2.0, you gain two stops of light. It would be for instance the equivalent of being able to take a picture at ISO 400 instead of 1600 or to take a picture at 1/15 of a sec. instead of 1/4. Since astrophotography must be taken on a tripod anyways and asks for slow speeds, I would not say that this lens is really a plus for astrophotography. But it is a good quality lens for the price.

Q: 2. will it work on a Sony a7s II?

A: This will be compatible with the Sony A7Sii.

Q: 3. Will this lense fit a canon eos 80D?

A: I love this lens. It fits m Canon 40D and my Canon 60Da, so I would say yes it will fit the 80D. But probably no auto focus and no auto aperture.Sharp, well-made lens.

Q: 4. Please confirm that this lens is chipped for auto exposure with Nikon cameras. The photos show that it has the electrical contacts on the lens mount, and the aperture ring has a Nikon type AI coupling ridge, but there isn't any mention of this in the lens description.

A: That lens does not have electronic connections. You can use the camera in Aperture priority or manual.

Q: 5. Will this lens work well with the T5i for daytime landscape and astrophotography?

A: Yes, if you are comfortable with manual focus. If the T5i has focus peaking (which I doubt), it would be easy. If not, you can use the LCD screen (not as easy). I use it on my Olympus (with adapter), which has focus peaking and that works well.

Q: 6. Will this lens work and fit a Samsung NX Mini?

A: No, the Rokinon 16mm f/2.0 ED AS UMC CS Lens for Samsung NX Mount will not mount on the Samsung NX Mini Mirrorless Digital Camera. The NX Mini uses the NX-M-mount that is smaller than the standard NX-mount.

Q: 7. is there a crop factor on this lens?

A: Lenses don't have crop factors, cameras do. This lens is meant for a cropped sensor or aps-c camera.

Q: 8. Is this a full frame lens or crop sensor lens? Does it work on both types?

A: The Rokinon 16mm f/2.0 ED AS UMC CS Lens for Nikon F Mount is designed for APS-C cameras. It is not recommended to use on Full-Frame cameras because it will cause a vignette around the image.

Q: 9. Is this lens compatible with a Pentax K-50 camera?

A: Yes, this lens is compatible with the Pentax K-50.

Q: 10. Is the lens hood that comes with this reversible so I can screw it on the lens backwards?

A: yes it is reversible