Before and after
It was one of the photo study I did this morning in Fort Mason with that red bridge :) The 1st before effect was done without filter, no flash that you may see not smooth water and dark rocks foreground. The 2nd shot was to use flash to lit up the rocks foreground and with .9 GND soft edge filter to balance the foreground and blue fog/sky :).
There is no right or wrong to take these photos IMO. It is all up to you how you want your final result of your photo. You may use different filter to control your exposure as you wish for the effect as you want.
Any input will be greatly appreciate it. Thank you!!