This lens really stands out as a high quality and inexpensive lens in comparison to the competition in this focal length. Your other options are the Zeiss lens with slightly better optical quality for a lot more money or the Sony zoom that is lower optical quality and still expensive. This one is the obvious answer is you can deal with manual focus and manual aperture. If you shoot landscape or astro, you're likely focused at infinity all the time, so manual focus is not a big issue. However, it seems that Rokinon has poor quality control resulting in some lenses in the market that are not meeting the expectation of high optical quality. If you get a good copy, I highly recommend this lens. The first one I purchased felt like the infinity stop on the focus ring was not quite at the right location, resulting in shots that were passable but not quite sharp enough. I got it replaced for free through Amazon in two days. The replacement was sharp edge to edge but noticeably about one stop darker in only one corner, which is not acceptable to me.Pros:- A steal in comparison to other ultrawide lenses in the market- Good build quality will likely survive a few drops- Relatively small and lightweight- F/2.0 for this price, great for astrophotagraphy but not important for other disciplines like landscape- Focus ring feels great, not squishy or hard to get very precise focus- Can use screw on filters unlike some other Rokinon wide angle lensIn the middle:- Manual focus, you're probably parked at infinity anyway, but with focus peaking I can nail the focus fast- Manual aperture, I was shooting in A or M anyway, I actually prefer an aperture ring- No image stabilization, with such a wide and fast lens, image stabilization is not really needed, so why bother designing in an expensive feature?Cons:- No exif data because it's fully manual. It would be nice to have, but not absolutely necessary- Poor quality control! Make sure you get a good copyIf you're interested, here is cheap lens case that fits well(size small) https://www.amazon.com/gp/product/B075LRNW8Q/ref=oh_aui_detailpage_o02_s00?ie=UTF8 And psc=1
