Inclination 0 would give you a completely flat image from the front, like so:
I’m using Keyshot. You can achieve the same grid in Photoshop and similar software making a horizontal hexagonal grid and transforming it by rotating it by -45° and adjusting its height to 57,7%. That should give you a grid that looks exactly like these tiles (blue outline below). In yellow you can see a square transformed in the exact same way as the hex tile, which gives you an isometric grid.
