01-18-2015 02:07 PM - edited 01-18-2015 08:01 PM
Perhaps there's a problem with your camera. But I suspect what you are seeing is normal. In low light conditions, the camera will illuminate the autofocus point(s) in red. A side effect of that is that the red light "spills" into the rest of the viewfinder display. The darker the ambient light conditions, the more noticable it is.
You can disable that behavior via the menus. See the "VF display illumication" setting. In the full English manual, it is on page 131:
01-18-2015 07:26 PM - edited 01-19-2015 12:26 PM
That's the answer.
So obviously instructional manual helps.
RTM or scroll through all the tabs in the camera menu and you will find a lot of answers to your uncertainty.
bdodd attaching the image of the manual is a very good way to explain the solution. I am also using this method when I can't explain myself clearly in words.
Hope that it help the OP to solve the problem.
01-19-2015 12:26 PM
I don't have the new 7D Mk II yet so I am only going by how my 1 series cameras operate. You guys did read this reply from the OP?
"I only got one AF point activated.
Yes, It features the gridline. I don't use It"
I would be surprised if a single focus square made that much red flashes. Maybe so but not likely.
01-19-2015 12:42 PM
Yes. Even though you activated just one AF point, the flash comes on when AF is achieved (by default setting) Red light is not just from the AF point but also from the grid lines which again can be removed in the menu.
However, you may turn it off it it annoys you.
01-19-2015 12:48 PM - edited 01-19-2015 09:02 PM
I just remove the grid from the VF and only the focus point flashes when AF is achieved. The flash (illumination) can be disabled completely from the menu.