An Anamorphic Lens Adapter For Very Pretty Video

Anamorphic lenses are a great way to shoot in widescreen, but they’re prohibitively expensive on digital formats. Enthusiasts have experimented with using anamorphic adapter lenses from old projectors, but focusing can be a chore and results sub-par. [Andrew] found a way to use these cheap old anamorphic adaptors on a modern camera without sacrificing too much functionality.

Pretty, no?

Anamorphic filming techniques came about in the era of film. The aim was to record cinema-style widescreen footage on 3:2 aspect ratio 35 mm film. The way this was done was by using a lens that squeezes a wide aspect ratio to fit the format, and then a corresponding lens to squeeze it back on the projector. This allows for higher resolution than simply letterboxing onto the 35 mm frame and wasting the extra space.

Adam’s hack involves 3D printing a lens housing that pairs an anamorphic projector adapter lens with a Sony E-mount taking lens. Gears are set up so that both lenses can be focused together, rather than typical adapter setups that require the user to juggle multiple focus rings at once. This makes the rig much more usable in real shoots where there’s no time for messing about.

It’s a useful hack, and one we could imagine quite a few low-budget filmmakers will be rushing out to replicate. Files are on Thingiverse for the eager. Consider whipping yourself up a camera slider while you’re at it for really boss shots. Video after the break.

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A Teeny Tiny 3D Printed Macro Extension Tube

When you hear the term “extension tube”, you probably think of something fairly long, right? But when [Loudifier] needed an extension tube to do extreme close-ups with a wide-angle lens on a Canon EF-M camera, it needed to be small…really small. The final 3D printed extension provides an adjustable length between 0 and 10 millimeters.

But it’s not just an extension tube, that would be too easy. According to [Loudifier], the ideal extension distance would be somewhere around 3 mm, but unfortunately the mounting bayonet for an EF-M lens is a little over 5 mm. To get around this, the extension tube also adapts to an EF/EF-S lens, which has a shorter mount and allows bringing it in closer than would be physically possible under otherwise.

[Loudifier] says the addition of electrical connections between the camera and the lens (for functions like auto focus) would be ideal, but the logistics of pulling that off are a bit daunting. For now, the most reasonable upgrades on the horizon are the addition of some colored dots on the outside to help align the camera, adapter, and lens. As the STLs and Fusion design file are released under the Creative Commons, perhaps the community will even take on the challenge of adapting it to other lens types.

For the polar opposite of this project, check out the 300 mm long 3D printed extension tube we covered a few weeks back that inspired [Loudifier] to send this project our way.