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A comparison of two views of the same plastic case with a window, internal standoffs, and connector holes. The top view is isometric, outlined, and isn't trying to be photorealistic. The bottom view has perspective, isn't outlined, and the materials look more complicated. The bottom view is so evenly lit that it's difficult to ascertain detail.
Comparison of CAD modeling view (top) from Fusion 360 and a rendered view (bottom) from model-viewer