The solution was to move the camera back and lower the field of view. Turns out that if the field of view is too big, you get a fish-eye lens. Now I know 
Hi there!
So lately I’ve been working on yet another project, this time where you attack a castle. I want to have grids that units of soldiers move to and from. Currently the grid is the white cube (of course later I’ll make it look better). However, I can’t seem to get the camera to look right. Just look at this:
The warping is just awful. How can I achieve this type of view without the warping? The white cube doesn’t even look like a cube, the warping is so bad. I tried with an orthographic camera, here’s what I got:
It looks so much more different, but at least without warping. I’ve been looking at this scene way too long, does the orthographic camera look weird? Can I use a Perspective camera but avoid the warping?
Thank you for any ideas!