Perhaps you wish to avoid superzooming in on a model’s face or some other area. Simply use limitRange.
* limitRange: Limit the range of the view.
* level: The zoom level of trigger limit. Default: “130%”.
* top: Top area range. Default: 1.0. Value range: 0.1 ~ 1.0.
* bottom: Bottom area range. Default: 1.0. Value range: 0.1 ~ 1.0.
* left: Left area range. Default: 1.0. Value range: 0.1 ~ 1.0.
* right: Right area range. Default: 1.0. Value range: 0.1 ~ 1.0.