If you can't download Nokia Pro Camera like me...
Here an easy workaround:
- Change your phone region and language to United States
- Connect to a WiFi network
- Under Settings - WiFi, click on the WiFi network you are connected to
- Switch 'Proxy' to on. Now type "126.96.36.199" into "Server/URL". In "Port", type in "8888"
- Go to the Store and click on 'Nokia Collection'
- Download Nokia Pro Cam
- When the download started, turn Proxy off
- Set your phone region back to normal, and Restart.