Thanks for your suggestion, Luis. The camera's white balance setting was sunlight, I don't ever use auto white balance. The bluish cast is the natural for the way this scene is lit: the sun is near the horizon, and all objects below the cloud deck are in shadow. Everything takes on a bluish tint (I've been at this spot many times, at this time of day). I think if you were there you'd see what I mean. Thanks again for visiting and your constructive comment.