Sorry for my lousy skill :embrass:
At first I set my camera hort on the trippod with cable release. After shooting for a while find that vert shoot also not bad but need to zoom in but which mean need to readjust the focus too trying to get the bulding sharp.
In the end in order to save time , I let go the cable release , use left hand to adjust the focus, right hand hold the camera and right index finger to press the shuttle button. The tripod is still attached to it cos no time to release the camera from it loh.
I just anyhow wrack loh :embrass: