Why Lighting matters:

Masonry reacts to lights differently

Every bit of lippage is exaggerated by shadow when the angle of the light source is close to the wall. The closer the light source, the worse the shadow.

Illusion?

‘Basket Weaving’ effect

The ‘basket weaving’ effect is the illusion you see at the horizontal bed joints.

Acute lighting will create this effect and pick up the smallest tolerances and exaggerate them.