I will be going to Cuba in a few days and I have purchased some filters and want to take a crack at getting some awesome landscape shots, from what I imagine mostly of the beach.
Now, I know white balance can be adjusted in many ways, but what is the best method, when there are about 2-3 filters in front of the lens.
Grey card, in camera AWB and adjust later in post? What do you guys suggest is the best route to take?

