Hi. In the course, you say that there are two types of sensor - full frame and crop. However, I have a Sony DSC RX10M4, which is apparently a superzoom bridge camera (whatever that means), and has a CMOS sensor. I read on one website that most DSLR cameras now have CMOS sensors. So this is confusing to me, not least because I am fundamentally an ignoramus when to comes to cameras. How many sensors are there actually, what's the difference, and what type do you find mostly in which camera type? Thanks!