Once iOS 17 is available you may want to quickly install it. The further into the testing process, the less risky it becomes to install the beta, but the beta process continues after the full version so if you want to avoid downloading buggy betas as Apple continues testing new features it’s worth removing yourself from the beta testing. We explain how you can do that in How to install the iOS beta on your iPhone. Per usual, you’ll want to make sure that your device is fully backed up before you install a new iOS update of any kind.Those who couldn’t wait until that date were able to join the Public Beta program and install iOS 17 as early as June (or July for the Public Beta). To download the latest beta, you can hop over to Settings > General > Software Update on your iOS device and then hit “Download and Install” located towards the bottom of the page. This generates a series of weightings for how to blend the two images - taking detail from one and tone, color, and luminance from the other. The images are run through four detail processing steps, pixel by pixel, each tailored to increasing amounts of detail - the sky and walls are in the lowest band, while skin, hair, fabrics, and so on are the highest level.These two images are also processed for noise differently than Smart HDR, in a way that’s better for Deep Fusion. Unlike Smart HDR, Deep Fusion only merges these two frames, not more. Deep Fusion picks the short-exposure image with the most detail and merges it with the synthetic long exposure.Those three regular shots and long-exposure shot are merged into what Apple calls a “synthetic long.” This is a major difference from Smart HDR.When you press the shutter, it takes three additional shots and then one longer-exposure shot to capture detail. By the time you press the shutter button, the camera has already grabbed three frames at a fast shutter speed to freeze motion in the shot.As to how it all works, The Verge explains:
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