Reflex lenses have their place but they are kind of niche lenses. If you want that donut bokeh for a particular aesthetic, or if you want a very light extreme telephoto, then it might be worth considering a reflex lens. But please try them first. The image quality isn't great and they can be hard to work with so make sure that you can live with all of the trade offs.
Usually these lenses have focal lengths of 300mm, 400mm, 500mm, or even more. TTArtisan has done something a bit unique here by having this lens be a 250mm focal length. That should make a bit more useful.
Usually these lenses have focal lengths of 300mm, 400mm, 500mm, or even more. TTArtisan has done something a bit unique here by having this lens be a 250mm focal length. That should make a bit more useful.