This is the most straightforward test. Basically, we mounted the smartphone to a camera slider and moved the device further from the subject in increments of 5mm, taking a picture each time. This creates an even playing field for all the smartphones and should give us a good idea which phone does it best.
For the subject of this test, we used a crisp USD20 note and here are the results:
Samsung’s Galaxy Note8 and Huawei’s Mate 10 Pro tie for the closest macro, producing a sharp image at just 20mm. Both iPhones, on the other hand, needed at least 30mm to get a sharp image.
One great thing about the iPhones though, is the fact that they both have far more accurate white balance than their Android rivals.