Point height different with different way of processing

Good day everyone, I have a question when processing the UAV file.

The problem occurs when I tried processing the file in 2 different ways on same location

  1. A project with 100 photos
  2. The same project, with much bigger location, and over 300 photo.

The end result gave me a height difference of almost double (8m and 18m). Is there any way to solve this issue? Please view the image below, thank you…

FYI: This project has no GCP and also processed using the same setting…Thank you

Hi @laujitsung,

In my understanding you captured at 2 different moments a specific area and tried to process the 2 projects but there were differences in heights.
Can you please send us the quality reports of these 2 projects you created in a pdf format?