The Olfi one.five is a similar size to the market-leading GoPro Hero 5/6 and weighs 30g less. It isn’t touchscreen-operated, though, and requires a case to make it waterproof.
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Although it’s considerably cheaper, the Olfi camera’s image quality is very good — my untrained eyes struggled to tell the difference between footage captured by the one.five and the Hero 5 when filming on the same trail in Full HD (1,080p) at 30 frames per second.
The Olfi also has the option to shoot in 4K (2,160p) at 24fps and capture HD (720p) video at a slo-mo friendly 120fps, though I found there to be quite a lot of blurring when really slowing down footage. Colour and clarity is good, thanks to a Sony Exmor-R sensor.
While the digital stabilisation works well, the gyro stabilisation option produces a weird blurring effect.
Where the camera isn’t so great is in its usability. The buttons need to be pressed quite hard and, because the bleep is barely audible when wearing a helmet, it’s easy to miss recording stuff.
Due to the external case, the sound recorded is very quiet too. Olfi has an app that lets you control the camera and edit footage. The files need to be stored on your phone in order for you to edit them, though, which uses up considerable space.
