Sony Xperia XZ1, XZ1 Compact, XZ Premium and XZs are getting a camera distortion fix
Four of Sony's recent high-end smartphones - the Xperia XZ1, XZ1 Compact, XZ Premium, and Xperia XZs - feature rear cameras with lenses that are a bit wider than on most smartphones. While this means you can capture more of your surroundings in just one shot, it also means photos can exhibit some visible perspective distortion.
The fix comes in the form of a software update, and includes a "Correction for image distortion" option that's found in the camera settings menu - as seen on the right. When this option is enabled, your photos should be distortion-free.
The camera distortion fix is included in the Android Oreo update that's now rolling out to the Xperia XZ Premium. The Xperia XZ1 and XZ1 Compact, which already run Oreo, should receive the fix by the end of November. As for the Xperia XZs, this could get the image distortion correction feature at the same time with its Oreo update (though we don't know when this is supposed to arrive).
Here's Sony's official response to this camera issue: