On some days, there’s a combination of ice and water that creates a curtain effect by the weir. The curtain is framed by spray and ice and calls out to the camera because it is so well defined. To make sure the curtain was photographed as it appeared, the camera was set to shutter priority and captured at 1/1600 second. I’m not a fan of those dreamy waterfall shots taken at a slow shutter speed but prefer a more realistic look.