While this prevents the wallpaper picture from being zoomed in on, the obvious downside is that you’ll have a black border on the image. The before and after seen above demonstrates how dramatic the difference is, with the prior picture so zoomed in you can’t see half the faces, whereas the screenshot image is appropriately sized with no zoomed effect. You can see the effect by hitting the Power button once the wallpaper has been set to enable the lockscreen. OS changes the way that wallpaper images are handled. The zoomed wallpapers have been in place for multiple major versions now, so don’t expect a change anytime soon. I have always been surprised they didn’t introduce various framing options for pictures, because surely many people want to set family shots and horizontal pics as their lock screen, but inevitably the people who are not centered in the photo get cropped out!