Now, if our understanding of the Gregorian calendar is sound, the 50th anniversary of that date will not be for another five months.Still though, it is worth taking a look back at the last 50 years because whether the date is right or not, it can not be denied that Canon has been making some darn fine cameras for a long time.The omnipresent EOS series was born in 1987 in the shape of the EOS 650, and in