Hi!

I've been searching around the net to find out what happens if I attach a Canon L series lenses to a APS-C sized sensor cameras. I found several sites with images and lots of information, but did not get a clear answer. I understand the framing difference, but I can’t figure out the thing with numbers.
If I attach for example Canon EF 70-200mm f/4.0 L IS USM lens to my Canon 600D, do I get at maximum zoom the same results as wit Canon EF-S 18-200mm f/3.5-5.6 IS Lens? Or I get with EF 70-200 L lens 200x1.6=320mm which is more zoom than EF-S 18-200 lens?

Thanks in advance!