What does aperture mean for your video? When a lot of light comes into the camera (with a low f-stop number), you get a brighter image and a shallow depth of field. This is great for when you want your subject to stand out against a background. When less light comes into the camera (with a high f-stop number), you get what's called deep depth of field and are able to maintain focus across a larger portion of your frame.
At this point, the consumer is weighing their options and deciding on the purchase. Therefore, the goal of this kind of video is to make your audience visualize themselves using your product or service — and thriving. There's a reason 4X as many customers would rather watch a video about a product than read about it. Videos are able to display functionality and leverage emotions in ways a product description never could.
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.