Hi I have 2 questions.
1) If I use a 18-200 and focus an object at 18mm, will I need to refocus again at 200mm?
2) For example, when taking video (maybe the camera following my kid around) using my iPhone, everything will be sharp. If I use 18-200mm, I will have the problem that my kid face/surrounding area/other people face will be blurred. If I want everything to be sharp, will I be able to do it with the 18-200?
1) If I use a 18-200 and focus an object at 18mm, will I need to refocus again at 200mm?
2) For example, when taking video (maybe the camera following my kid around) using my iPhone, everything will be sharp. If I use 18-200mm, I will have the problem that my kid face/surrounding area/other people face will be blurred. If I want everything to be sharp, will I be able to do it with the 18-200?