I used to shoot a lot of candids when my kids were young. They didn't know what the camera really was, so you could get great shots of the kids running around, full candids, fully seeing their face. Now that they are older, they well know what the camera is, and their crazy camera-dad is snapping away again, which leads me to fewer face shots (because the only "candid" is when they can't see me) or, posed shots (when they want to pose) or making faces at the camera when they don't want their picture taken. It's also causing me an issue this year that I didn't face before. I have always had a Canon 5D at the holiday season. I just got one for this fall, and the mirror slap is a major "I'm taking a picture" announcement now. Candids are almost impossible now on FF (I REALLY was hoping for mirrorless interchangeable FF to be released this year). What's the solution? A still longer lens, lol.