It caught me off guard twice already: If I use shutter priority mode but forget to set my ISO properly, I can get overexposed jpeg files like these, even though it looks fine in the viewfinder. The only warning you get is a blinking focal length setting. The histogram probably looked odd too but histogram itself is usually too faint for me to notice the problem.

I switched to manual mode and it works for me so far. Once I find out how to set auto ISO, I should be able to avoid this situation in the future.

#omsystem
#omsystemom3
#isosetting
#imagequality