The color yellow commands attention, both in nature and on man-made objects.

Watching the Euro soccer tournament, I noticed that the warning cards are yellow. Yield signs, police crime tape, and school buses are yellow. Lance Armstrong is being accused of doping during his Tour de France races, in which he wore the leader's shirt, a bright yellow, many times.

In nature, the stamens and pistils of a flower are often yellow to attract those pollinating -- and yellow -- bumblebees. Autumn leaves turn yellow. Many flowers and fruits are yellow. And of course, there's our glorious sun.

So you had a fun challenge in the 'Yellow' contest. And our judge John Blanding, assistant chief photographer for the Globe, had just as much fun choosing the winners. Here's what he said:

By Paul Marotta
Perfect Bokeh Photography

For me, there are, perhaps, two ways to shoot sculpture: straight documentary style, cleanly capturing the work by the artist in a technically proficient manner; and a more interpretive manner, adding some additional emotional dimension to the work already created by the artist without losing its meaning.

In both of these, all the technical issues discussed in the terrific links Teresa posted in the initial contest outline come into play to some degree or another: background clutter, separation between subject and surroundings, interplay of light and shadow, composition, color, does the structure of the photograph enhance the form of the work, use of positive and negative space, rule of thirds, depth of field, and more.