Excerpt: I want to use this lens for interior, filming and arch. The first time I used it for filming a concert. The fast lens made it possible to get enough light even in low light. There is almost no distortion, so I can work with. It has no auto-focus, as it was described.
Excerpt: Great value and optical quality. Capable of taking incredibly sharp images or providing a huge depth of field. The focus ring is very smooth. It's a great lens for landscapes and night sky shots.
Pros: Consistent Output, Sharp, Strong Construction
Summary: After a lot of research I decided to give this lens a try. As I watched reviews and read articles online, I found out that Bower, Rokinon, and Samyang are all the same company but with different names for branding purposes.
Summary: I have been using manual lenses (including Rokinon) for over 30 years, and just couldn't get this one to play nice with me. It even seemed to seat improperly on the camera (which could explain the focus issue.) It was ridiculously fuzzy when I opened it fully, which is mostly where I need it.