So I did an exposure for the lights (that’s what I recommend you do almost always with Apple ProRaw). In the background appears an iconic palace of the city: the bell tower of Arnolfo di Palazzo Vecchio. I wanted to do a test in a very difficult lighting situation: take a picture in an alley on a street in Florence where, due to its narrow shape, little light enters at the time I was take this picture. Now, thanks to Apple ProRaw, all this information is available to the user even in post production. So imagine that when you expose the photograph with your iPhone, the smartphone actually makes a lot of exposures which it then merges together. This is where the new computational photography algorithms such as Smart HDR come into play. We cannot therefore expect, in high contrast situations, to have the same “vision” as our eye (which in any case remains unique, photography is always a personal interpretation). In the current state of sensor technology there is a limit of recording information obtainable with a single click. One of the biggest “disappointments” on the part of my students in photography classes is noticing a big difference between what they see with their eyes, in a high contrast situation, and what the camera captures. The greater the dynamic range, the greater the chance to have both shadow detail and highlight detail in a shot. Dynamic range is the ability to record information from shadows to highlights.
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