The CapSlinger — a 2g TPU accessory that sticks to rear lens caps and mounts to any camera’s hot shoe, is now live on eBay for €9.99 (two units) or €19.99 (five units). It ships from Germany and is handmade in limited batches. No major retailers, no pre-orders, no press release: just a functional, unbranded tool solving one specific, universal pain point for interchangeable-lens camera users, swapping lenses with one hand.
It does not hold weight. It does not replace a tripod or a strap. It exists solely to let you twist a rear lens cap off while the lens is mounted to the shoe, then slide that same cap onto the lens you’re removing. That’s it.
The idea comes from Joohon Chae, a researcher whose Instagram Reel demonstrated the motion: camera hanging from a neck strap, lens detached cleanly in one twist, sensor exposed for seconds instead of tens. Digital Camera World notes the accessory was brought to attention by that Reel, and calls the problem it solves “one we’ve all been there”: camera in one hand, new lens in the other, wishing for a third hand to unlatch and hold the old lens while attaching the new one.
Rear lens caps go missing. Sensors get dusted. Expensive optics end up wedged under an armpit or balanced precariously on a knee. None of those workarounds are recommended.
The CapSlinger sidesteps the whole sequence. You mount it to a rear lens cap using adhesive. Its top features a hot shoe-compatible mount. Slide the capped lens onto your camera’s shoe, twist, and the cap detaches.
Then attach the now-empty lens to that same cap still slotted into the shoe. Since hot shoes are standardized across DSLR and mirrorless systems, compatibility spans Canon, Nikon, Sony, Fujifilm, OM System, and others, provided the adhesive bonds to the cap’s surface. Digital Camera World stresses the device is not designed to bear the full weight of either lens or camera.
Your hand must still support the gear. The CapSlinger only enables the twisting motion. For best results, the camera should be attached to a neck strap or harness so it hangs independently. This isn’t a camera.
It’s not a firmware update or a new sensor stack. It belongs nowhere near the Pixel 10 or Galaxy S27 Ultra launch coverage, those stories are about computational photography at scale. The CapSlinger is for people who still carry three lenses, change them mid-shoot, and have dropped a rear cap into a river at least once.
Price converts to roughly $11.21 for two, $22.31 for five, no US or Indian pricing listed. No availability date beyond “now on eBay”. No roadmap. No ecosystem play.
Just a small thing, made by hand, doing one job cleanly. It ships from Germany. Orders are live.
GDFiled by The Gadgets Desk
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