If you're looking for the narrowest possible plane of focus, you might like the newly introduced Laowa Argus 35mm f/0.95 wide-angle lens - it covers a full-frame image circle and, at f/0.95, allows extremely open-aperture filming; not without pitfalls with this sensor size, as we all know. The focus has to be controlled manually, the focus travel is 300°. Focus breathing is said to be low, according to manufacturer Venus Optics.
Laowa Argus 35mm f/0.95
The optical construction consists of 14 elements in 9 groups, including one extra-low dispersion element, one aspherical element, and four ultra-high refracting elements. The closest focusing distance is 50cm.
The iris can be unclicked for seamless exposure adjustment when shooting movies. The shutter has 15 blades. The filter diameter measures 72mm.
Approximately 755g is the weight of the lens, which is available for Sony E / Nikon Z / Canon R. It costs (plus duties / import - shipping from Hong Kong).
Already available in the Argus line is the 
Laowa Argus 33mm f/0.95 for APS-C cameras, to be followed, it seems, by an Argus Laowa 45mm f/0.95 FF and an Argus Laowa 25mm f/0.95 MFT (neither have been announced yet).
;)
