the gnd filter would not help in every picture here.
there are certain pictures where the details you want will not be achieved with a gnd filter due to the nature of gnd filters having a "horizon" where the light is cut out, gradually or abruptly.
Yeah. That's true. Some of the pics cld use a soft-edge GND filter although not all can. I was wondering with city-scapes and potentially fast-moving clouds, wouldn't HDR be also an issue with blurring (although i suppose it isn't generally noticeable if you don't pixel-peep)?