http://www.adorama.com/alc/taginfo/darkest object <p><span style="font-size: small;">If the shadow areas of the scene are most important, you might be tempted just take a meter reading only from that area. If you do this, you could overexpose the image and cause total lack of detail in some of the highlight areas.</span></p> http://www.adorama.com/alc/article/8578