During this latest trip to the Outer Banks, I found myself utilizing quite a few tools before tripping the shutter that have been added since the conversion to all digital, and thinking ahead to what was to be done with an image later in post processing. One of the things I added when I switched over from film was split neutral density filters, both hard and soft gradients of 2-stops. The main reason was to better balance the light values between the sky and what was below, either water or land, and a 2-stop because water reflections are usually about 2-stops darker than what’s above. Being a firm believer of getting the most information from the scene in the camera, I utilize these filters quite often. One note here about these filters: some of the less expensive brands tend to leave a color cast on the image.
Whenever I photograph a lake or the ocean at first light, since the horizon is clean and straight, I always use a hard gradient split ND filter as in the image above. In addition, when recording these scenes, it helps to reduce the exposure by about one-stop of the meter reading in order to keep the image as dark as the scene really is. Otherwise, the light at the horizon may be overexposed resulting in a loss of color density.
In the previous post, there was an image of kayakers in the mirrored reflection of clouds above. A hard gradient was placed above the horizon to balance the sky and reflections, but since I was facing south just as the sun went below the horizon, the right side of the frame was a bit bright, leaving the image unevenly lit.
In these images made before the kayakers arrived, by adding the soft gradient held across the frame with the darker side toward the bright sky, the light values were more even throughout the frame. The idea is to eliminate any areas that may contain blown out highlights since trying to correct them later becomes problematic. The image on the left was taken without the second filter and is brighter on the right side, corrected by adding the second filter in the image on the right.