Zero shutter lag is what I love about the iPhone. Compared to my previous Xperia Z5, the pictures on the iPhone are not better (rather worse at bad light condit

Zero shutter lag is what I love about the iPhone. Compared to my previous Xperia Z5, the pictures on the iPhone are not better (rather worse at bad light conditions), but I never have to wait to take one. The time it can take the Z5 to focus and finally take a picture is annoying.