People skim visuals before they read copy. Clear, intentional photos read as intentional work; noisy phone shots read as an afterthought.
For products, controlled light and clean files usually outperform quick snapshots on PDPs and ads. For services, straightforward portraits and environment shots answer basic questions (who am I hiring, what does the space look like) faster than text alone.
One shoot often covers site, social, and print for a while if you plan coverage up front.
“Professional” here: planned lighting, consistent color, layout-aware composition, retouching, and export specs for where files ship. Not only a nicer camera.