Updated
Electronics shoppers zoom in to check compatibility and quality. Which port is it? What's the finish? Do the buttons look solid? The photos need the precision of a spec sheet, even for an inexpensive accessory.
They also need to look premium. Anodised aluminium, soft-touch plastic and glass each pick up light differently, and fingerprints, dust and reflections show on all of them. Screens add another layer: what's shown on them has to look natural and approved.