Next, the development of the lighter values begins with a light application of the white charcoal pencil. Again, small circular strokes are made with the tool. For this reason, we use a blending stump to smooth the application. The drawing surface features a bit texture that does not result in a natural look. We'll begin with the "HB" pencil, creating darker values by making controlled, circular marks. An "HB" and "4B" pencil are used to develop the darker values, while a white charcoal pencil is used to develop the lighter tones. We are working on a neutral gray surface so that it is a bit easier to create a full range of value within the scene. The taller the water droplet is, the longer the cast shadow becomes.īecause the dominant light source on the right is more direct and at a less extreme angle, the resulting cast shadow on the left is still visible, but not quite as long.Īfter drawing simple shapes for each water droplet, we can begin the process of developing the values. In this case, we see an area of cast shadow extending almost entirely around each droplet. This secondary light source produces a few locations of stronger highlight on the left side of each water droplet, but has a greater affect on the locations of cast shadow. This secondary light is originating from the lower left portion of the picture plane. This light source is weaker, but positioned at more extreme angle. In this example, a secondary light source is also affecting the locations of value. The values are actually darker in this area instead of being lighter as we would see with a solid object. On solid objects we expect to see an area of core shadow in this location, but in this case, we see lighter values that are evenly distributed.Īnother interesting thing happens around the strong highlight. This produces an area of lighter value positioned opposite from the dominant light source. As a result, light waves are sent to the side of the droplet, opposite of the dominant light source. Light waves are then refracted, bending and dispersing the light within the droplet. In this example, we see a direct and dominant light source originating from the right side of the picture plane. Some light is still reflected, producing a highlight, but much of it enters the droplet. Instead of bouncing off of the surface, as we see with solid objects, a good amount of light is able to penetrate a water droplet. Once you have a basic understanding of the location of values, then water droplets are easily added to any surface in a drawing. By understanding the light's behavior and recording the correct locations of light and dark values, the illusion of water droplets is developed.
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