These are not just nicer looking radar cameras - they are a lot more lethal, so be careful.
First thing is that these cameras do NOT flash. They can take photos in complete darkness through ultra-light sensors, so even if it does not flash, it could have caught you. They also automatically read your number plate from the picture taken.
Now, comes the thing that catches most people. These cameras are continuous photo-taking cameras and they will take your photo regardless if you have been speeding or not. Then the next camera in 3-5 kms again does the same. Now, instead of checking your speed through advanced radars, these cameras are very simple and all they do is calculate how fast you traveled between the 2 cameras. If you arrived at the next camera faster than 120 km/h (or whatever the speed limit is) then you get fined.
What does this mean?
It means that you can stop speeding up between cameras and slowing down as it does not matter anymore. If you are speeding in between 2 cameras you will get fined. Furthermore, don't be fooled by no flash flashing that the camera is not working.