I think it's so good and such a breakthrough feature that I would never buy a phone that doesn't have Portrait Mode. In low light it doesn't work that well (or at all in some case cases), but with good light (and obviously especially outside) I've been able to take beautiful shots that would be impossible with any other smartphone camera.
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And with a bit of VSCO cam editing it looks even better.
Lol, well to be fair, if we all were taking pictures of such a beautiful subject we could possibly have nice photos even with an iPhone 4 camera.
But yes, you've got mad skills with the IPhone 7 Plus's portrait mode.
I've gotten some nice photos of my naughty cat indoors on the dining room table under chandelier lighting, with proper edges on the subject and proper blurring of the background. Unfortunately, animals aren't supposed to be on the table!
But when I catch my cat there, I figure I may as well make the most of the opportunity. My humans won't cooperate, though, and unlike that lovely lady with the pretty smile in your picture, I get a lot of eye rolling and grumbling as I try to document a day in the life of my family.
At the very least, I have found the zoom lens indispensable in bringing scenes closer to me that I couldn't otherwise capture clearly. These guys, on the buoy, for example, weren't even that easy to see with my eyes. I trusted my 7 Plus to bring them in closer and was not disappointed. No, that photo won't stand up to being blown up into a large print, but it's a nice reminder of something I've never seen before in my half a century on the planet and likely won't ever have a chance to see again in my next half century.