Though not exhaustive, this is a good look at various ideas that have been developed in the lifetime of the science and art of photography, the people involved, and the techniques developed.

Each entry is well thought out and formatted to make the information easy to get through and is a good initial starting point for anyone that wants to explore this further, it made it a good quick read and is still on my shelf as a quick and easy reference.

Not really an essential addition to a comprehensive photography book collection, 100 Ideas That Changed Photography is not a waste either as it is fun and informative and nice to dip in and out of.