> For the complete documentation index, see [llms.txt](https://docs.gremsy.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.gremsy.com/payloads/vio/pinpoint-estimate-target-location/laser-range-finder-target-point.md).
# Laser Range Finder target point
### **1. The Zooming camera is not centered**
* The Vio payload is using Sony block FCB-ER8530 for zooming camera. This module is not keep centered when doing zoom in, so the Laser range finder (LRF) target point will move following the zoom factor of camera.
* The Vio payload will mark the target point of LRF by a special shape on the screen.
* Because of the behavior of the zooming camera, The LRF target point only support upto 20x zoomming.
### **2. On-screen display LRF target point**
* Depend on the zoomming factor, the position of the LRF target point will be changed.
* Please make sure that the LRF target point shape is focusing to the target, the LRF will return the measured distance as well.
### **3. The estimate location on the captured image**
* If the gimbal was set to FOLLOW or LOCK mode, the capture image will be geotagging with the estimate location of target
* If the gimbal was set to MAPPING mode, the capture image will be geotagging with the location of the drone for mapping purpose.
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