Video: DIY Perks creates a massive '35mm F0.4' equivalent lens for otherworldly bokeh

Matthew Perks, creator of the DIY Perks YouTube channel has shared how he built a '35mm F0.4' lens built around an episcope lens taken from some of the earliest projection technology. As Perks explains in the video's introduction, the episcope lens was the optical element used in epidioscopes to project well-lit objects onto a wall or screen in a dark room. One of the unique characteristics of these lenses is their extremely large image circle when used to capture light instead of projecting it....