Apple today released a new ad on its YouTube channel, highlighting the photographic capabilities of iPhone 7 Plus, including Portrait Mode.
In the sweet new ad, entitled "The City," two people spot each other from across a crowded city street and then go on a series of adventures while using the iPhone 7 Plus's camera to capture their journey.
The song "Sing to Me" by Walter Martin is featured in the background, and the ad uses the tagline "With Portrait mode on iPhone 7 Plus, you can focus on what you love and leave everything else behind."
Apple has done several ads focusing on the iPhone 7 Plus and its dual-lens camera, and this particular ad appears to be a sort of sequel to "Take Mine," the ad about a girl in a Greek village who captures the town using the Portrait Mode depth effect.
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All I'm saying is that all iPhone 7's should be built & act the same (obviously a high res screen and bigger battery would be acceptable. But not giant features).
With Portrait mode, the iPhone switches to this telephoto lens and uses the other standard lens in conjunction with it to scan the scene and basically come up with a 'depth map' of the scene so that the iPhone can tell how far the objects in front of it are in relation to one another. With this information, the iPhone can add a blur effect to objects in the background of your subject with the blur increasing in intensity as objects are further and further away from the subject. This is essentially mimicking a "bokeh" effect that is common with lenses on larger DSLR cameras that keep your subject in focus while having a soft focus on everything else. The iPhone obviously cannot fit a large enough lens to produce this effect physically, so Apple incorporated a software work-around that actually works rather well.
Unfortunately since the telephoto lens on the iPhone has a small aperture compared to the standard lens, this means that that lens does not gather as much light as the standard lens, so to use this Portrait mode feature, you need to be in a place with a lot of available light. It is also software scanning the background and creating a depth map, so it does take a bit of time to get right, and it does not alway work correctly. But it works rather well with faces, since the iPhone is able to do facial recognition to more quickly and accurately apply this effect.