6 months ago I bought a second hand Canon 6D and although it is a very nice camera, it can be frustrating. I post 'modelling' pictures to Instagram once or twice a week and when I don't have a photographer with me I take my own pictures using the Canon Camera Connect app. Sometimes the AF doesn't work when using the app so about 50% of the pictures come out blurry and other times the app would 'lag' and delay the picture from being taken by a few seconds.
I am looking for a camera that has continuous AF and it would be better if the camera can take shots by itself, like every 3 seconds for 100 shots or something, while having the continuous AF on.