Photograph taken with the above setup.
3-stop ND filter, yellow filter, long-expired PlusX film, Bulb mode. Estimated 1 second exposure.
Note how the long exposure beautifully smoothed the sprays of the fountain.
With the BoxTopper for stability on a tripod, and the BoxFilter enabling the use of filters,
the photographer was able to capture this effect with a very successful long exposure.
All images courtesy of Jeffrey W. Kilgo