User Manual
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4. Image Quality Features
High Dynamic Range (HDR)
HDR solves the problem with over- or under-exposed images of scenes with both
bright and dark areas in the same picture. Your Arlo Ultra camera automatically
determines when to use HDR. HDR is optimized for outdoor environments. Your Ultra
camera comes set to use HDR automatically, but you can turn it on and off. See Turn
Auto HDR on and off on page 56.
Local 4K streaming and recording
4K means you can see more details in every image, even when zoomed in. Your Arlo
Ultra camera outputs 3840 x 2160 resolution at a 16 x 9 aspect ratio.
Your Arlo Ultra camera streams 4K while providing:
• 180-degree diagonal eld of view that does real-time image de-warping
• Real-time high dynamic range (HDR)
• An integrated spotlight with dual noise-cancelling microphones
The Arlo Ultra system does all of this processing in parallel and in real time. Efcient
video encoding and battery optimization algorithms between the camera and the
SmartHub allow 4K to work when your camera is running on battery power.
To use 4K streaming, you need an Arlo Ultra camera paired with an Arlo SmartHub.
For basic use of 4K, we recommend an average upload bandwidth speed of 3 Mbps
per Ultra camera.
You can stream 4K content without a subscription. You can use 4K by local live
streaming or recording 4K motion content onto a microSD card in the SmartHub. You
can also purchase an add-on service to store 4K, motion-activated clips to the Arlo
Cloud for access anywhere your mobile app has a data connection.