cameras.json

{
    "cameras" : {
        "perspectiveCamera_id" : {
            "name" : "user-defined name of perspective camera",
            "perspective" : {
                "aspectRatio" : 1.77,
                "yfov" : 0.7854,
                "zfar" : 1000,
                "znear" : 1
            },
            "type" : "perspective",
            "extensions" : {
               "extension_name" : {
                  "extension specific" : "value"
               }
            },
            "extras" : {
                "Application specific" : "The extra object can contain any properties."
            }
        },
        "orthographicCamera_id" : {
            "name" : "user-defined name of orthographic camera",
            "orthographic" : {
                "xmag" : 0.5,
                "ymag" : 0.5,
                "zfar" : 1000,
                "znear" : 1
            },
            "type" : "orthographic",
            "extensions" : {
               "extension_name" : {
                  "extension specific" : "value"
               }
            },
            "extras" : {
                "Application specific" : "The extra object can contain any properties."
            }
        }
    }
}