A purchase may have been made, but there's still a lot of video can do to leverage the post-conversion stage of your flywheel. During the "delight stage" of the inbound methodology, your goal is to continue providing remarkable content to users that makes their interaction with your product or service as incredible as possible. It's also in hopes that they'll tell their connections about their experience or up-sell themselves. Therefore, the goal of this type of video is to encourage your customers to embrace your brand and become brand evangelists.
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.
When it comes time to shoot, clear out unnecessary people from the room and turn off the overhead lights. With your three-point lighting setup, there will be no need for those harsh fluorescents. When — and only when — everything is set up, call in your talent. There's nothing worse than being nervous, and then having to anxiously watch as lights are turned on and the camera is tested.