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This crazy looking DIY camera gives the full frame FOV and DOF equivalent of a 35mm f/0.4

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You can’t beat a good DIY crazy camera and they don’t get much crazier than this. Built by Matt at DIY Perks, this particular camera features a 432mm f/5 episcope lens with an image projection circle of around 500mm in diameter. To give you some idea of scale, your average full-frame lens has an image projection circle with a diameter of at least 43mm. That’s an area of 0.015 square meters. This lens has an image circle of 0.785 square metres (~50x the size).

And with this huge projection also comes a big advantage when it comes to depth of field. Despite being a 432mm f/5 lens, it offers the equivalent field of view and depth of field as a 35mm lens would on a full-frame camera if it had a maximum aperture of f/0.4. The closest lens to this designed for the relatively small full-frame format is the Zeiss 50mm f/0.7, and the last one of those to sell was rumoured to fetch around $200,000.

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Camera lens inspired by eyes of extinct trilobites can focus on near and far objects at the same time

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Inspiration for new technology is everywhere, even in the fossils of prehistoric creatures it seems. Scientists have developed a nanophotonic light field camera with extreme depth of field capabilities, based on the eye of the extinct trilobite, Dalmanitina socialis.

Ask any palaeontology (or just about any 5 year old) and they will tell you that the trilobite was one of the first animals to develop complex eyes. Very complex it turns out. What made it unique was the fact that it could focus on both near and far objects simultaneously. Most eyes and cameras simply cannot achieve this dual focus feat.

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