I purchased both this book and the Half-Life 2 'Raising the Bar' book together for a discounted price. Both are exceptional and both I HIGHLY recommend owning.
The Doom 3 book is far heavier on word count and focuses on the entire production of Doom 3 as opposed to the sporadic comments and captions grouped with pictures in 'Raising The Bar'. Having said that both are different and will appeal to everyone interested regardless.
Both are printed on very high quality paper, 'Raising The Bar' even having a hard cover, a sore omission from The Making Doom 3. The content is brilliant with hundreds of images gracing throughout and insights into the making of these games. I particularly liked reading about the ideas, monsters and objects that were cut from the final games. Seriously, every gamer or visual artist/designer should own these, awesome and inspirational 'picture' books to have laying around.
SO! If you are a fan-boy or girl of either game, get both, they are EXCEPTIONAL READING and I cannot recommend them highly enough.