It's a pretty common practice for manufacturers to upload their custom system applications to the Play Store. This is done so the apps can be updated outside of Android system updates. The Nokia phones produced by HMD Global are pretty close to stock Android, but there are a few custom apps. One of these is the Camera application, which has now been published to the Play Store.
The current version is v6.0080.07, and as you might expect, it can only be installed on Nokia phones.Read More
HMD Global uploads Nokia Camera app to the Play Store was written by the awesome team at Android Police.