SJCAM SJ20 Dual Lens review: built for the night, but does it bring the promised value?

With two cameras, can this action camera beat the GoPro in the dark, remain easy to use, and save you some cash?

(Image: © Future)

Digital Camera World Verdict

This was a genuinely innovative idea that looked like it had the potential to improve matters for budget action cameras, but – not only is it slightly spoiled by the usual non-premium complaints (build quality, a slower processor and some image quality compromises) – it is also priced not that far below the premium action cams too. That forces it into a niche!


  • +

    Low-light lens really does work

  • +

    Decent battery life

  • +

    Good bundled accessories


  • -

    You need to stop shooting to switch cameras

  • -

    Build quality doubtful

  • -

    Can't handle high dynamic range scenes

  • -

    App of doubtful quality

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Action cameras has become a very competitive space, and in recent months we've taken the controversial step of saying that the DJI Action 4, not them more famous GoPro, is the better choice for most people and the main reason was the larger image sensor which helped solve low-light imaging, a longstanding problem for GoPro's generations of action cameras.

SJCAM SJ20 Specifications

Video formats: 4K at 30fps, 2K at 60fps, 1080p & 120fps
Photo res: 20MP
Video modes: Normal, Motion detect, Timelapse, Slow, Car, Pre-rec, Livestream, Webcam
Field-of-View: 154
Digital Zoom: 8x
Video: H.264, H.265


The <a href="" data-link-merchant=""">DJI Osmo Action 4 is my choice for the best action camera money can buy and you could always just dig deep and get the best – front and back screens touch screens plus a 1-inch image sensor gives low-light images without needing two lenses and excellent software.


The <a href="" data-link-merchant=""">GoPro Hero 10 is priced similarly thanks to the company's policy of keeping its older models around for a few years and discounting. It still boasts 5.3K60fps video, a slick and fast user interface, and HyperSmooth 4 stabilization, in a very solid case.

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Adam Juniper
Managing Editor

With over 20 years of expertise as a tech journalist, Adam brings a wealth of knowledge across a vast number of product categories, including timelapse cameras, home security cameras, NVR cameras, photography books, webcams, 3D printers and 3D scanners, borescopes, radar detectors… and, above all, drones. 

Adam is our resident expert on all aspects of camera drones and drone photography, from buying guides on the best choices for aerial photographers of all ability levels to the latest rules and regulations on piloting drones. 

He is the author of a number of books including The Complete Guide to Drones, The Smart Smart Home Handbook, 101 Tips for DSLR Video and The Drone Pilot's Handbook