The landing of the population

[Mid-Knight Acchan]

Hello, please tell me.
I planted trees along the valley of the valley,
The tree is inclined according to the normal of the terrain.
Is there a way to make these instances vertical?
The red arrow is ideal.

[archonforest]

You can edit the individual instances in a population. Under the edit button click on Start Editing and now you can edit individual trees.
But why do you want to make them straight? They look more natural like this.

Nice picture by the way.

[Dune]

It's perspective because you most likely point your camera up a bit.

[René]

Yes, it is perspective, and the trees are not straight in the first place, but curved.

[Mid-Knight Acchan]

Oh, I completely forgot the lens distortion of the camera.
Thank you very much. We will proceed with completion.

[luvsmuzik]

Quite nice so far 

[Mid-Knight Acchan]

I kept the status of the camera and completed the scene without changing the angle of the camera.
Thank you for watching.

[Hannes]

A very nice image!

[masonspappy]

Echo others...really nice picture!

[Kadri]

Nice render.

[bobbystahr]

Well solved and a fine render...