I'm a huge fan of Gizmodo (as well as many others) for gadget news. They are your go-to site for up-to-the-minute gadget releases, commentary, and an overall humorous slant on the world of consumer electronics. That being said, I don't tend to look to them for articles about photography. The following article that popped up today that caught my attention - it gave a quality overview of various types of lenses (zooms, primes, wide-angle, etc.).

Here's a clip about wide-angle lenses:
"Why is this? Film is flat, so light can come in at any angle, and the film will mostly record it. But camera sensor pixels are concave, and don't do well with light coming in from the side. Think of the pixels as little water glasses, says Sigma's Dave Metz. "You can fill them up with water by pouring it in from above, but try shooting it in from the side with a garden hose, and it's going to go all over the place." A telephoto by definition is pulling in light from directly in front of it, whereas a wide angle by definition is bringing in light from the sides, too. Hence the trouble, and the added expense."

The article is lengthy and may seem overwhelming to those just wrapping their minds around this information.

Check out the complete article here.