Google camera does not work without Camera2API; you must ensure it is enabled on your ROM. If not you must use Magisk Module to conveniently enable Camera2APi. Here are the instructions to install this Magisk Module: Add the zip in Magisk Manager – Modules and reboot or you could flash in your custom recovery, TWRP etc. here is the download link: C2API_enabler_v1500.zip
Download and install Google ARStickers and ARcore:
New stickers are releases v.1.1.180205063 here are the instructions:
You must add this line to the build.prop file: ro.config.calibration_cad=xml
There is released new ARCOre-1.0.180129103-gemini.apk for Xiamoi Mi5. There is no need for the cad file, uninstall ARCore 0.91 delete the line ro.config.calibration_cad=/syste,/etc/calibration_cad.xml in the build.prop file, then you will restart your device and install New ARCore here is the download link: ARcore_1.0.180129103-gemini.apk
GcMod5 based on Mod by B-S-G (Gcam5.1.018-Arnova8g2-v1.1apk)
This is a new version, the settings are:
Model: Pixel 2XL or Nexus 6p if you want more detailed images
Config cameraHDR+: Nexus6p or Nexus6 auto or all pixel for motion photo
HDR+ parameters: medium or higher.
To enable the HDR+ UI button you will go to Settings > Advanced > HDR+ control. You will need to restart the app so the new settings are applied. Here is the download link: GCam5.1.018-Arnova8G2-V1.1.apk
Mod by B.S.G based on Google Camera v4.4.20 (MGC_4.4.20_7.0H_C2API-v4.2AllinONe_Full_manual)
Change log: All languages included, there are HDR+ parameters from Google Camera 4.4020 v4.0 All-in-One Full manual as a single setting ranging from medium to super high. Default HDR+ parameters setting for each camera config is now listed in the camera config name. All features are fixed and there is a limited increase in the resolution of HDR+ photos to the largest 4:3 photo size.
ChangeLog: The device_features folder will create automatically and also the xml file will update with the name of your device. Cleaning existing libs and cache, fixed HDR Pro, HDR Live and Flash off. And HDR PRO is improved.
Features: This mode gets all the information at your fingerprints with the automatic scanning of QR codes, barcode, and business cards. Just place the camera on the QR code or the barcode, then select find>save and copy.
This mode has rich features: Photo, video, slow motion, and panorama. The professional mode is with fully control focus, white balance, shutter speed, ISO sensitivity and exposure.