[fdim]

I am glad that Sony Z5 has a camera button, it is much nicer and more natural to use than trying to touch the screen

[aggie]

You can use the volume (-) button on iPhone.

[copperx]

It's still in the wrong place, balance-wise. The camera button should be as close to the edge as possible so that the thumb can counteract the depression force; otherwise, the picture may come out blurred.

[H4CK3RM4N]

Volume up also works.

[brudgers]

My Lumia 950 has one as well.