This shot was taken at 4:15 in the afternoon with a Canon 6d, Sigma 50mm Art, and an Ice 77mm ND1000 Filter. The filter cuts out 10 full stops of light, allowing for the possibility of long (really long) exposures during the daytime. When shooting at f/11 and ISO 100 I needed to use bulb mode with 700-800 seconds of the shutter being open to get correctly exposed images. The filter left a slight purple and blue color cast, which was easy to correct for in post when editing the RAW file.
ISO 100 f/11 700.6s