Sorry for such a novice question. How would I figure out what the optical zoom is for a lens? I am very new to cameras in general, and looking to get my first SLR. Currently I have a Canon A70 with 3X optical zoom. Then I bought a tele-converter lens for it (TC-DC52) 2.4x. What does that lens change the zoom to?? 7.2???? I am most likely going to buy a D50 body only and a seperate lens, but how does one figure out what the zoom is on a lens? Thanks, and sorry for the novice questions to you people who know so much. Trying to learn.