graduated http://www.adorama.com/alc/taginfo/graduated Article: Mastering Graduated Neutral-Density Filters.From the Perfect Picture School of Photography <p><span style="font-size: small;">Adorama's online photo learning partner, the Perfect Picture School of Photography, is are very happy to add Glenn Randall as an instructor. Here he shows how to use graduated ND filters for landscape photography.</span></p> http://www.adorama.com/alc/article/13005 Article: BUYING GUIDE: Filter FAQ.Frequently-asked questions about choosing and handling filters <p><span style="font-size: small;">We answer seven important questions about filters.</span></p> http://www.adorama.com/alc/article/8134