New to the wide-angle, however, is a larger aperture of f/1.8, up from f/2.2. Aperture deals with light: The lower the number, the more light can shine on the sensor; the more light you have, the better images you’ll get in darker rooms and under night skies. In addition, the wide-angle offers OIS (optical image stabilization) to make low-light shooting for both photographs and video an even better experience. It also has a shorter minimum focus distance (you can get closer to objects and still have them be in focus, which is great for macro photography) than the telephoto option.
This paragraph is what convinced me to get an iPhone 7 over the Plus sized brother. The lens on both models if f/1.8 while the other is f/2.2 so if you want to zoom w/o using your feet, you’re stuck with more noise and a lower aperture. (higher number = lower). Once Apple gets both lenses at 1.8 and all photos are taken with both lenses, I think I’ll stick with just the smaller more pocketable iPhone.