Captain, that 18-200 has some SERIOUS quality issues at the extreme ends. So bad that I noticed when I was far less picky than I am these days.
That's so interesting. I have to admit that I'm relatively picky when it comes to IQ and I've read much complaints about the IQ on the 18-200 on the net. So I decided it's not a lens I want to buy. Then I received this lens for free from my wife's father and was totally surprised to not notice any IQ issues. I specifically expected these issues but have found this lens to be good at all focal lengths, perhaps just a very slight lack of sharpness at the 200mm range. Also, I know it's not just my poor judgement because I was able to notice IQ differences among other lenses, just I always found my copy of this lens performing well. So I don't know what's going on, maybe I'm just lucky with my copy.