Real estate agents take snapshots to document homes for sale as if to say, "This home has a dining room." What their photographs should be marketing is the dining room as a great space to spend time dining with friends and family.
Photography can be used for marketing real estate, but often agents just take a few quick snapshots instead of hiring a pro. I have never seen poorly photographed shoes on the Zappos website. It's also rare to see poorly photographed products on Pinterest, or in the Target store flier that comes with the Sunday newspaper.