How many photos or videos should I include in a series?

There's no rule about how many photos or videos should be in a series: as many as it takes to tell your story concisely. 

Clients don’t want to search through endless variations of similar assets, but it isn't always easy to anticipate clients' needs. Each asset you chose must offer a meaningful difference from others in the series; otherwise, search results and user experience suffers from the availability of too many similars, and stronger works are more likely to get lost amongst the others in the set. Yet, it is also important to provide clients with options that might fit their specific use or design needs. 

With all of these different factors to consider, what is the best way to approach an edit? We put together some detailed advice to help you manage your material, evaluate each asset's strengths, and maximize the series as a whole with smart curation of a final edit. 

Read the full article here: 
https://www.stocksy.com/coop/news/295