Halide app developer says iPhone portrait smoothing is due to low contrast, noise reduction

The developer of the app, which is billed as RAW Manual Camera and has in one review been described as a “pro camera app”, suggests in this blog post that the smoothing observed (and previously described here) may be a consequence of smart HDR in that HDR always reduces contrast (hence high dynamic range) and therefore apparent sharpness, which may subjectively appear as smoothing. Read more here.

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