Most lenses top out around f/1.4 or occasionally f/1.2. There is the occasional lens that maxes out at f/0.95, but this one takes it even further. This great video review takes a look at the Kipon Ibelux 40mm f/0.85 lens.
Coming to you from Christopher Frost Photography, this great video takes a look at the Kipon Ibelux 40mm f/0.85 lens. The 40mm f/0.85 has an extreme maximum aperture, a crazy 1.44 stops wider than an f/1.4 lens and even a third of a stop wider than an f/0.95 lens. One thing to note is that the 40mm f/0.85 is only for crop sensor bodies, but you still get the light-gathering power of an f/0.85 aperture alongside some pretty extreme depth of field properties. If you are shooting on something like the Fujifilm X system, this makes it an intriguing option, both as a portraiture lens and as a low-light coverage lens. It also comes with features like a 10-blade diaphragm for smoother bokeh and an all-metal barrel for added ruggedness. On the other hand, it is important to note that it is a manual focus only design, so don't expect to use it for fast action. Check out the video above for Frost's full thoughts.