Testing the Hitech full ND 1.2 (4 stops), ideal to give long exposures like this one (89s).
Canon EOS 5D Mark II, Carl Zeiss Distagon T* 2.8/21 ZE, ND filters.
Resolutions: 2560×1600, 2560×1440, 2560×1024, 1920×1200, 1920×1080, 1680×1050, 1600×1200, 1600×900, 1440×900, 1400×1050, 1280×1024, 1280×960, 1280×800, 1280×720, 1024×1024, 1024×768, 1024×600, 960×854, 960×800, 800×480, 640×960, 640×480, 480×272, 320×480, 320×240.