Excerpt: Fantastic lens!! Especially considering the price. Constructions feels solid, focus ring is precise and butter smooth. It can be little soft at 2.8 but once closed down a few stops it is about as sharp as any other wide angle I've ever used. What ever distortion and vignetting there is can be easily corrected by downloading a LR lens profile.
Excerpt: Excellent value for the money. Yes, it does work on the full frame Sony A7 or A7R! On these cameras, it is a true 14mm ultrawide vs. 21mm equivalent you might get on APS-C like NEX. The other Rokinon/Samyang wide angles (10mm, 12mm and 16mm) are designed for APS-C and will seriously vignette on full frame cameras.
Pros: Consistent Output, Durable, Strong Construction
Excerpt: My second copy but was worth the wait! This lens is very sharp. There is some distortion that is easily removed with PTLens software, $ online. Tested it against my Nikon 14-24 which it will be replacing, better sharpness in the center and equal on the edges at F8 the Nikon is slightly better at F2.8 No edge smearing or purple edges on the frame with the A7r.
Excerpt: This is a rare combination of quality imaging, value and speed. Nothing else comes close. Is the lens perfect?. No lens is perfect but this lens is better than lenses costing far more. In addition, I was able to find and download a free Adobe Lens Profile file for this lens that corrected distortion in Photo Shop and Lightroom. If you like super-wide images, you will like this lens.
Pros: Easily Corrected, Good Construction, Good Contrast, Low Light Capability, Sharp, Superior Performance
Excerpt: Bravo Rokinon. Thank you for making a lens for the masses that is of such quality. I can't wait to see what else you bring to the FE lens ecosystem. For those wondering this lens is a full frame lens. When Rokinon released this lens for the NEX they actually designed the lens to cover a full frame sensor. The images that come out of this thing are outstanding.
Summary: I bought this lens because of the very good value for money and image quality. The purpose of this purchase: interesting, beautiful landscapes and HDR just unusual for wide angle shots. I shot on the Canon 17-40 F4 Lens. I will say that Samyang 14mm F/2.8 MF UMC I liked and viewing angle and sharpness. A big plus is the price of lenses at this level. Negative side version for Canon cameras - this is not the correct focus distance scale.