Q&A: What is the difference between Adobe photoshop CS4 and photoshop lightroom?

Question by ME4Me: What is the difference between Adobe photoshop CS4 and photoshop lightroom?
I love digital photograph now I want to learn how to do different graphics and things with my photos. I have the student discount so I’m not worried about price so I just want to know the difference and the benefits of each program.

Answer:

Answer by Crim Liar
To do justice to Lightroom would take a proper full review so this is incredibly potted, but here I go.

Adobe PhotoShop is a general purpose raster based image editor, and it’s very, no make that extremely good at what it does. However for the professional photographer there are repeat processes that need doing over and over, sometimes for vast numbers of images. Lightroom will completely automate some of these tasks, and make others much easier than straight PhotoShop can.