Search algorithms are increasingly prioritizing web pages with video and videos now appear in 55 percent of Google keyword searches. Besides helping your website rank on relevant searches, videos also make your snippet (or the actual result listing content) bigger and more eye-catching, meaning searchers will likely see it before they see other results on the page.
Professional cameras, like DSLRs, give you fine control over the manual settings of shooting video and allow you to achieve the shallow depth of field (background out of focus) that people rave about. While they're primarily used for photography, DSLRs are incredibly small, work great in low light situations, and pair with a wide range of lenses — making them perfect for video. However, DSLRs do require some training (and additional purchases) of lenses.