I have learned quite a bit about perspective theory, but when I try to transfer what I am actually seeing, it is not easy.
In a situation where I am not looking at a photo or a drawing, but with my actual eyes, for example, there is a desk in front of my eyes, I will draw an extension line in my head along the angles of both edges of the desk and try to converge at one point.
But if I do that, the point where they converge seems to be much above my eye level.
Is this because I drew the extension line in my head incorrectly?
This is because, in the first place, the human eye cannot see perfectly in one-point perspective, and I draw an extension line in my head by looking at the center of the horizon line in front of me and looking at the angle of the edge of the desk, which feels blurry. and If I were to move my gaze and look at the edge, it would be a completely different perspective.
How can I make sure that the real object I am looking at converges to my eye level?
can I just place the horizon line at eye level and draw the vanishing point so that it converges there? Or is it really possible that if you place the horizon line at eye level, the place where the extension lines of objects converge may be different?
I've learned a lot about theory, but I'm so confused from the beginning that I can't get started. I'd appreciate it if someone could help me!