Hi!  I have a Canon XTi and have 2 lenses already - the 18-55 that came with it and a 50-200 that I got a couple of years ago but seems to be broken since it won't focus on close ups anymore.  So....I am ready to get another lens.  I noticed a few of you guys talking about a 50 mm.  Is that the best choice for a second lens?  And, which one?  I noticed on Ritz there a couple of options 2.5 and 1.4 ef, not sure which one to get.   99% of my photos are of my kids - twin four year old boys who rarely stop moving.


Finally, I have a disclaimer.....I am totally lame and always take pics in auto mode.   I have no idea how to use it in manual.  Maybe I will take a class or read the manual this summer :)  


here's a pic of the usual subjects ....taken yesterday with my 18-55 lens, on automatic of course.
