i'm considering to off load my Canon 55-250mm for a vacation lens. Been reading up alot on Canon 18-200, Sigma 18-250 and Tamron 18-270. I'm still rather new in DSLR fyi. I have since filtered Sigma, and deciding on Canon or Tamron. I'm edging over for Tamron for its extra 70mm, but read about the slow AF and bad low light shoot capability.
Does anyone have Tamron handheld low light/indoor shots? would be good if the shots are taken between 150-200mm with slow moving subjects. Anyone knows how it performs as compared to Canon 18-200 at these range, low light/indoor?
Also, on the slow AF, how bad can it get as compared to Canon 18-200?