How to re-enable ISO 100 on Canon Rebel T2i

After selling my Canon Rebel T1i on Amazon for $565 (minus a $47 commission for Amazon), I bought a Japanese branded “Canon Kiss X4″ camera known as the Canon Rebel T2i in the US market and 550D elsewhere last week off eBay.  Why would I do that?  Because the Rebel T2i has been “out of […]