Windy Days…
This photo was taken at the Zaanse Schans in The Netherlands. I used a 10 stop ND filter to reduce the light. You can see the effect on the water, and the windmill blades end up looking like a disc contour. But because the mill blades turn quite slowly the exposure of them fade very fast, so the contour becomes very light. Definitely visible yes, but a bit too light, so the exposure of the disc is slighty enhanced (darkened) to make it stand out more prominent.
Windy Days…
This photo was taken at the Zaanse Schans in The Netherlands. I used a 10 stop ND filter to reduce the light. You can see the effect on the water, and the windmill blades end up looking like a disc contour. But because the mill blades turn quite slowly the exposure of them fade very fast, so the contour becomes very light. Definitely visible yes, but a bit too light, so the exposure of the disc is slighty enhanced (darkened) to make it stand out more prominent.