The cameraInfo.imageSize property allows the project author to define the default image size used for captured photos. By default, this property is set to medium (640x480) to make data uploads more efficient. However, the value can be changed to 'unrestricted' to honor the resolution of the device's camera. The setting can be changed for a project using the JSON editor in the ArcGIS QuickCapture designer.
Size options are the following:
- small (320 pixels on the longest edge)
- medium (default and 640 pixels on the longest edge) - the default value
- large (1280 pixels on the longest edge)
- unrestricted (no size limit)
This functionality is documented here:
https://doc.arcgis.com/en/quickcapture/help/editprojectjson.htm#ESRI_SECTION1_193EED782B804261AA9CB9B09D6BAC38