Chris is just finishing up a book on Wide Angle Photography. The human eye is roughly 180 degrees from one edge of the human eye to another. A shorter focal length than 50mm is considered wide angle. The larger the number in mm, the narrower the angle. The thing about wide angle is that you have the advantage of being able to include more information in the image. They're great for portraits and landscapes. But the downside is, the wider the angle, the more distorted the image will look. Suddenly your subject's head will look larger, or features on their face will become exaggerated. That's why you want be very careful how you compose your shot and where you put your subject in an image. So with group shots, you want to try and not step back so much. The more you step back, the more egg shaped people's heads will be. A good way to learn how to compose in the wide angle is to go look at paintings at a museum or read through some coffee table books on classic art. You can learn a lot.
Don't forget our current assignment - "Joy." Take a photo of, about or otherwise concerning the concept of "Joy" and then post it to the Tech Guy Group on Flickr. Make sure to tag it with the word "Joy" as well! If Chris likes it, it could end up on next week's photo contest review segment!