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Free Book: Drawing Portraits Post #39

6/1/2011

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1.2.40 Fringing and shadows

If you hold an object against a light source, then you will find that its perimeter does not look like a solid and abrupt transition from light to shadow. Light leaks around the edge because the edge is not perfect. I call this fringing. Consequently, the shadow that is cast by the object does not have a perfectly hard edge.  Therefore, you should not draw hard edges in shadows - partly for this reason, and mainly because of reflected incident light 
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Additionally, light sources are not infinitely tiny. They have significant dimension which means that a light source sends rays of light past the object from a range of angles. This means that the intensity of shadow is greatest where the most light rays are blocked, and becomes weaker as you move away from that spot.
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Free Book: Drawing Portraits Post #38

4/1/2011

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1.2.39 Layers

In the same way that you use multiple layers of paint to protect a door or produce an oil painting, multiple layers of graphite will improve your drawing. You might put one layer down as dots or circles in HB, followed by a glaze of 6H, then some dots or strokes with B, then strokes with H followed by some lifting and more layers. The result will be much more interesting than a single layer of graphite. These techniques are presented in detail in this book.
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    spOOk's art is owned by Jeremy. He has practiced drawing and painting for about 40 years, and might get good at it one day. spOOk's art is focused on graphite portraits.

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