Code:
As of 3.0, the max distance the camera can go is ~51 yards. The distance the camera is allowed to travel is cameraDistanceMax * cameraDistanceMaxFactor; the default sets the camera to 15 yards. The game's options for changing the camera distance is a slider that changes cameraDistanceMaxFactor from 0 to 2, allowing a distance of 0 (first person) to 30 yards.
/console cameraDistanceMax 50
/console cameraDistanceMaxFactor 3.4
Those are the max values these two settings allow, however it'll still cap to ~51 yards and not the 170 the math would suggest.
ImprovedCamera2 and similar addons / config.wtf modifications used to allow you to get the camera out to 500 yards, this is just not possible anymore.
(Btw, bumping your post like that is very rude when someone answers)