My size of the background image is 8 and I want to make a size of 16. So what will I do ?
Hello Manthan,
This is cover in Lecture 71 - Setting Up Your Play Space, specifically @01:13.
If it helps, look at the timeline at the bottom of the lecture and you will notice a bookmark (currently it states that 91 people have bookmarked it, it starts from there).
The background image provided is 800x600. When you bring this image into Unity and look at it’s details within the Inspector you will notice that the Pixels Per Unit property is set to 100. Thus, 800 pixels / 100 pixels = 8. In order to fit your desired size of 16 World Units within Unity, you will need to set the Pixels Per Unit to 50. Thus, 800 pixels / 50 pixels = 16 World Units.
Hope this helps 