5D Mk IV, EF24-70 f/2.8 L II, f11, 53mm, 30 sec
Processed in Lightroom for monochrome and split toned.
When imaging a scene with lenticular clouds like this one, I like to use a long exposure to exaggerate their circular rotation. Here I used a Lee 6 stop ND filter to extend the exposure time to 30 sec. Instead of the wispy clouds, I got more of the circular motion of the whole storm system.
This was predawn light, so my original exposure would have been a couple of seconds at f/11, not long enough to get the full range of motion. The below image was a similar exposure taken after the sun came up and the exposure time difference with the same setup was 27.5 seconds, for a 2.5 sec exposure.
5D Mk IV, EF24-70 f/2.8 L II, f11, 70mm, 2.5 sec
Of course its all a matter of personal taste, I happen to like both, I also have a shot at normal exposure speeds without an ND filter and like those as well. This is just one example of the use of an ND filter and why they should be in every landscape photographers bag.