A:AnswerIt is compatible with any Sony E-Mount camera. So yes, this would physically fit on the a6600. Just keep in mind, using this lens on the a6600, you would have to factor in the 1.5x magnification because of the crop sensor on the a6600.
A:AnswerNo this is an after market lens. Easy to use for. But it's a fixed frame so no zoom but the aperture setting makes this a great buy for night shots and low light settings. I'm a beginner and found this easy to use