Really, you shouldnt have to spend much more than $500.00 on a decent body, but it's the glass that will cost you. Definitely purchase an inexpensive 50mm prime lens (about $100.00), as it is a truly worth every penny. I cannot suggest any other lenses since that is the only one I have that is worthwhile.
Agreed. One of the best purchases you can make is a Canon 50mm f/1.8. It will cost you less than $100. Even without zoom, it will quickly become your favorite lens. But, if you take my advice and purchase a used Canon Digital Rebel from a couple models ago (i.e., XT or XTi), $500 will probably get you the body and a basic zoom lens--usually a 16-55mm.
To answer the "f-stop" question, this refers to depth of field (or the amount of depth in your photo that is in focus). This is influenced by the amount of light gathered. As you increase the f-stop, more of your image will be in focus, from foreground to background. I suggest taking a class or buying a few books from Amazon just to brush up on basics, you will be happy you did!
This is not exactly right. Depth of field is really a side effect of your f-stop adjustments. F-Stop refers to "aperture", which is actually the size of the opening in the lens. The larger your aperture (or lens opening), the more shallow your depth of field (there will be less in focus all at once). But aperture is actually one of the primary ways to adjust the amount of
light allowed into your camera.
When you hit the shutter, light is exposed to the film. Or, in the case of digital, the sensor. That's why it's called "exposing" a picture; or when the light in a photograph is correct, it's called good "exposure". Three main things affect proper exposure. Shutter speed (how long the film is exposed), the aperture (how large the opening for light is, or how much light is allowed in all at once), and how sensitive the film is (on digital cameras, this is called the ISO).
Adjusting these various exposure settings will have different side effects on the end result of your image. The side effect of adjusting your aperture is a change in depth of field, as the previous poster described.
But aside from all of that technical mumbo jumbo, you need a camera! Here's a great deal on a used Canon Digital Rebel XT with a kit lens for $350:
0209B003 Canon Rebel XT Black 8.0 Megapixels Digital SLR Camera Body With EFS 18-55mm f/3.5-5.6 Black Lens
It will accept all of the current Canon lenses and it will get you started right away. Of course it will lack a few of the bells and whistles of the newer models, but that's really what they are. Bells and whistles and you really don't need them to start out. Besides, by the time you're ready to upgrade, you won't want to be in the Digital Rebel line anymore anyways.
And, an
excellent second lens for about $100:
2514A002 Canon EF 50mm f/1.8 II Standard AutoFocus Lens - USA
A camera body and two lenses for under $500. Not a bad place to start. Plus, you'll have a few bucks left over to buy a camera bag and some UV filters.