18-200 is combination of zoom lens and telephoto lens, its depend on your needs. If you want all-in-one, then go for this lens. If you want better zoom lens, then go for 17-50 f/2.8.

Macro allow you to shot an object with closer distance, means close-up.

18-270 is much better since got vibration compensation but 18-200 don't have. The macro in both 18-200/270 can also shot wide angle landscape, portrait, object...etc

For me, both this lens is just the extended version of kit lens and smaller aperture.

i622 TTL isn't that accurate, force me use manual all the time

This post has been edited by Faint: Nov 15 2010, 02:42 PM