You are downloading the Camera Assistant AppXBundle file v2016.519.1733.0 for Windows Phone. Camera Assistant is a free and useful Photo & Video app: This application provides calculators and information which can be used in photography with digital cameras that support settings like aperture, ... You can now download the offline AppXBundle file to install & try it.
Download Locations for Camera Assistant 2016.519.1733.0 AppXBundle file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline AppXBundle File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Camera Assistant AppXBundle file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.