A product kit is a combination of products, forming suggested functional equipment, optimized for a given task or purpose. A product kit can consist of selected products favorable for architecture photography, macro stacking, travel, and reportage photography. Such a kit can also list ALPA products that fit best for using a 3rd party product, like a specific digital back. A product kit has an official ALPA kit code and an informative price sum of all components. It can also have an official ALPA article number and a special kit price.