Shade Values in Quilt Making
Positioning the “light source” from the upper left corner is a standard convention among map makers. (Odd, because the sun almost never shines from this geographical position.)
Even following this standard, sometimes the eye gets confused, as shown in this map of The Abyss, Grand Canyon National Park. Is it a canyon or is it a ridge?
For most people, centuries of art work using the orientation of upper left light, have ingrained the convention of placing shadows in the lower right. Continue reading

















