Excuse me, where is the LANC interface of Sony XR260E camera?

There is no LANC2.5mm interface on the body of Sony HDR-XR260E camera.

The A/V R interface of its semicircular port is compatible with the remote control function of LANC.

Semi-circular open wire-controlled manipulator that can be connected to Sony's original 50/60/80AV tripod.

The interface position is shown in the red circle in the figure below:

There are two interfaces between Sony XR260 and the previous camera-controlled tripod:

? One is to use the 2.5mm LANC interface on the right side of the figure below.

A camera using this interface,

Most of them are older civilian tape /CD models and broadcast standard definition/high definition tape models.

? One is the semi-circular interface on the left side of the figure below.

This interface is shared with the camera AV port, and is mostly used for hard disk flash models.

This is the case with the XR260.