last i knew 28mm was wider than 30mm 
the reason? because fast lenses get hard to manufacture once you stray away from the 50mm range. a 50 1.8 will set you back 80 bucks, but a 35 2.0 is 240, and a 28 1.8 is 420 (85 1.8 is 340). for some complicated reasons, 50mm is the easiest and cheapest to manufacture, and either direction from there gets more expensive. also, difficulty is greater than an exponential of 2, so a 25mm lens will be much more than twice as difficult to make than a 50mm, and 100mm will be more than twice as difficult to make as a 50 (in longer lenses, aperture plays the biggest role though, and with modern designs it's not as big of a problem as it used to be). canon makes several f2.8 and faster lenses between 14 and 50mm, , with every 8mm away from 50 (approximately, not perfect, but workes well between 20 and 35mm) doubling the price, and every stop doubling the price. so if a 35 2.0 is 200, a 28 2.0 would be 400, and a 28 2.8 would be 200. if you want fast primes, canon makes them, and there are a lot of them for under 500. however, your definition of a fast prime is nothing like the standard one, where anything 2.8 and faster is considered fast. look at most camera companies other than canon and nikon, their fastest glass is usually 2.8 or 3.5, with a few exceptions that go as fast as 1.4 (nowhere near as cheap as canon 1.4 lenses though)
edit: here's two links for you. you can find these lenses for less than 500, and used for less than 400.
http://www.bhphotovideo.com …3_Wide_Angle_EF_28mm.html
http://www.bhphotovideo.com …_Super_Wide_Angle_EF.html
I don't hate macs or OSX, I hate people and statements that portray them as better than anything else. Macs are A solution, not THE solution. Get a good desktop i7 with Windows 7 and come tell me that sucks for photo or video editing.
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