Taking advantage of long exposure frames while avoiding ghosting artifacts caused by motion between frames.
Capturing additional long exposure frames while maintaining the fast, predictable capture experience of the Pixel camera.
The traditional solution to this involves taking two different exposures and combining them, but this is challenging for computational photography and requires: We can correctly expose either the shadows or the highlights, but not both at the same time.
Here’s the Pixel 5a camera sample that Google inadvertently revealedĪt the Launch Night In keynote, the company called exposure bracketing a “serious upgrade” for HDR+ that “mix Google novel techniques with traditional HDR techniques.” It addresses how Google’s original HDR+ burst photography system - which “deliberately underexposed images” to avoid loss of detail in highlights - results in noisy shadows for high dynamic range scenes.Ĭapturing HDR scenes is difficult because of the physical constraints of image sensors combined with limited signal in the shadows.
Google today detailed the technology behind that new capability while also revealing that the Pixel 4 and 4a now use bracketing in Night Sight. Besides an ultrawide lens, the Pixel 5 and 4a 5G added HDR+ with Bracketing to improve image quality in shadows, among other benefits.