It was quite interesting reading about how the human eye works and then how it relates to the camera.  I had heard about the basics of the human eye before (how the image is flipped in the back of you eye) but I liked learning about how the muscles work and the lens. 

I really enjoyed the section about the camera obscuras.  All I have done before is make a pinhole camera out of an oatmeal container.  This section really made me want to make the camera that you put over your head and use a towel to block the light.  It would be fun to move around and watch the other side of the box like a movie.  I would also like to try making other types of pin hole cameras at some point. 

The plastic lens that Garth created seems really interesting and It would be cool to test it out in different lighting conditions. 

In the section about using Photoshop makes me want to talk a Photoshop class to learn about the different tools.