Zdepth Issue

[pierrelemaux]

Hello,
I don't understand why my Zdepth is surrounded by a black circle.

The min and max value are very close because i have to work on very small dimensions.
Can you explain me?
Thank you.
Pierre

[Laserschwert]

The min and max value are very close

And that's the reason. The distance between the camera and the center of the plane (a) is smaller than the distance between the camera and the edges of the plane (c). Pythagoras and all that... a² + b² = c²

[pierrelemaux]

Thank you very much for your answer.
I understand now. I should remember my mathematic lessons.
Pierre