Just got my G4 on the weekend (used my upgrade since i couldn't hold out for a Win10 device) and love the camera on this thing. Compared to the other phones I've owned (Note 4, iPhone 6 plus, to name a few that have good cameras), I feel the G4 has come closest to my old Lumia 1020.
The first picture is actually a cropped photo of the 3rd image. The amount of detail that came through crisp is amazing.
Some night pictures I just took at the airport. The first one (vertical orientation) was taken in auto mode and inside of my car and the last two were manual mode. *still learning how to use all the camera settings*
It doesn't really look like it but this was in low light at the Luxor Hotel. I should be posting some night shots of the vegas lights later tonight or tomorrow. Really enjoying this camera, and a big difference coming from my Droid Ultra.