Complex sentence: Some users have problems with wide angle shots in high contrast, due to the large area which can vary greatly in brightness, it is important to understand that even in this situation, the focus point can be critical to the overall exposure.
Split into simpler sentences: Some users have problems with wide-angle shots in high contrast, due to the large area which can vary greatly in brightness. It is important to understand that even in this situation, the focus point can be critical to the overall exposure.