yes.. i love that lens, said to be a little soft at wide open f1.4 but i love the look! I may have a spare one for sale shortly Noa if youre not in a huge hurry you can let me know..

Remember that your 50mm on the T2i will effectively be an 80mm due to the 22.3mm x 14.9mm sensor size.

Well you own one - is it soft at 1.4 or not? You should know.
Steve

Is the focal length indication from a photocamera the same as with videocamera? F.i. my xh-a1 starts at 32,5mm so the 80mm is less wide?

Yes, if the lens is in good shape and if the price is right I would certainly be interested, and I"m not in a hurry depending what you define under "shortly":)

Yes. With your 50mm lens, you will already be zoomed out 80mm. I chose a Nikon 28mm f/2.8 and it is around 35mm I am assuming..correct me anyone if I am wrong.

The Canon XH-A1 has a 1/3" chip, which makes lenses about 7.2x more powerful than a 35mm stills camera at the same focal length. So a 50mm standard lens willbe equivalent to 370mm or so on the XH-A1! The same 50mm lens will equate to about 80mm on the 550D as it multiplies by around 1.6x.
Steve

Alright, so the 28mm is actually a 44.8mm.

To be pedantic, as is often said, a 28mm lens is always a 28mm lens, on the 1.6x crop body it'll be equivalent to 44m.
Steve

That looks like a decent model of lens for the T2i. It is the more modern style of lens with the rubber focus ring grip and doesn't have a large flange that might protrude into the camera body. The older lenses with the metal focus grip are apparently non-coated so tend to have more objectionable internal reflections.