Hi, I bought a P9 that is yet to arrive but the other day I was using my friends P9 and wanted to try the camera in pro mode (which is the mode that I use the most on my phones) and I noticed that after some speeds, when playing with shutter speed, the viewfinder image just stops updating the amount of light that should enter ie. I'm indoors with artificial light and if I set the speed to the fastest posible the viewfinder does not go black (and it stops showing the differences in lightning way before the fastest shutterspeed). Same goes the other way, if I set the speed to a ver very low one the viewfinder does not end up looking white, so it makes this feature useless cause the only way I have to see if I'm using the correct speed is to take the shot and then open the picture to see if it was the correct speed. I noticed this happening also in the Huawei Mate 8. I'm used to the LG G4 wich every step of the shutter speed shows a difference in lightning in the image your watching. Is there a way to fix this? does this happend with every Huawei phone? I haven't got the phone yet but I'm already thinking of selling it and getting an S7