Included are various examples, several comparisons between apertures, an example on precise focusing, an example on how image stabilization can cause severe blur, and more.
The Canon 200mm f/2L IS is an outstanding lens— so go get one at B&H if it suits your habits and your biceps. B&H loaned this fine lens for evaluation. They’re a great source for everything photographic. I like the lens enough that I might have to purchase it using the funds from the sale of my Canon 1Ds Mark III when I sell it.