Modern cameras make it easier for the average photographers to take ordinary snap shots under average conditions, good photographers produce stunning images under difficult conditions.
Wedding advice suggesting cutting costs by getting an acquaintance to take some snaps at your wedding in return for free booze could result in missing magic moments. A professional photographer will remain sober and alert, rather than propping up the bar.
With the advent of digital photography, people still suggest it is possible to save money by buying the CD and getting them printed at your local discount mini-lab, as professionals charge too much for prints. However, photographers no longer rely on selling prints to cover the costs in time and equipment to photograph a wedding. With the advent of scanners, people would buy one set of prints then get them copied illegally at photo stores. Photographers changed their business models. They commonly charge a flat fee that includes a CD of the images and a small number of prints. They still provide high quality prints from professional labs, not cut price corner store snaps.
One of the things included in the price of a professional should not be obvious to the customer. This shows in the extensive range of duplicated equipment they carry around at a wedding. While Uncle Harry may have a shiny new camera, he probably only has one, and how many flashguns does he have? A professional will take the unlikely event of equipment failure in their stride and ensure that your wedding is not the one to miss out.
A professional is an experienced photographer whose knowledge of their equipment and photographic techniques enable them to capture those “decisive moments” at a wedding. The quality of the composition and timing makes the pictures look professional.