Photo may show two dual cameras for Sony Xperia XZ3 smartphone – Tablets and Phones – News

I also think that they should put more emphasis on their software, both the front end (usability and stability of the application) and the processing.

I do not know how the NOW is with the application, but up to the Z5 Premium (or was the XZ Premium, I do not know exactly), however, the camera application was an application by mode, which caused interesting problems, as if you were opening the camera while the phone was locked. If you wanted to choose another mode, you had to unlock the phone.
It is also true that choosing a different mode means loading a new application, and you've seen that it happens, this process took longer than other devices, 1 second about, but yes I notice that little hickups

is a problem that they have had since the Xperia Z, 2013, rather than having to rewrite it all.

Other troubles, it is that the autofocus works against your choice of faucet to focus, and the layout of the application in general.