Figure 6. Trace fossils (Cruziana tenella), positive hyporelief, Lower Cambrian Mickwitzia Sandstone, Västergötland, Sweden. SMNH X3527. 6.1. No enhancement; virtual light from NW. 6.2. Diffuse gain; virtual light from NW. 6.3. Diffuse gain; virtual light from SW. 6.4. Specular enhancement; virtual light from NW. Note how, in contrast to the more naturalistic lighting in 6.2. and 6.3, specular enhancement brings out all structures irrespective of their orientation in the bedding plane.

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