Rokinon Reflex 300mm f/6.3 ED UMC CS Lens for Fujifilm X Mount (Black)

Ever since I learned about mirror lenses, in my film days, I've wanted to try one. I recently got an X-T5, my first digital interchangeable lens camera, and I wanted a telephoto lens. I saw this and just had to try it out. First impassions, manual focus(not electrified) with a mirrorless camera is difficlelt compared to with an SLR, but it well doable if you're patient. I really enjoy using the donut shaped boke of this lens. It requires you to think a bit more about the background. Even though it's blurred it still has some busyness to it, which some photographers don't like. I think it's fun to work with. As others have noted, because this is a mirror/reflex/catadioptric lens, it is soft. My experience has this being softer than my vintage Canon FD mount lenses from the 70s and 80s. But, because this lens is catadioptric, it does not suffer the fringing and other chromatic aberrations that those old lenses have. In color, this looks sharper, in BW, the old lenses are way sharper. I had a non-photographer friend comment that these photos looked like they were painted. That is because of the unique boke. If you want to use it, for that effect, you can do some cool stuff with it. I'm only scratching the surface of what this is capable of. In short, make sure that you want the effects of a catadioptric lens before buying. If you don't like it, then save up for a normal 300mm lens. For me, this thing is a blast to use. So much fun.