You are downloading the Lumia Camera Classic XAP file v18.104.22.168 for Windows Phone. Lumia Camera Classic is a paid and useful Photo & Video app: You automatically get the new Lumia Camera app with the Lumia Denim software update if you have a Lumia 830, 930, 1520 or Icon. Lumia Camera Classic ... You can now download the offline XAP file to install & try it.
Download Locations for Lumia Camera Classic 22.214.171.124 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP 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 Lumia Camera Classic XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.