What accessories-and other stuff-should you bring for a successful excursion into the wild? We asked more than a dozen of our favorite pro nature photographers to tell us what they just can't do without, and we were surprised by their creativity.
Trekking in the Badlands of South Dakota or the wilderness of Yosemite can yield hundreds of great photos. But first you have to pack.
 A compass to keep your bearings Scoutstyle. (Silva Type 7 ER (discontinued). Current model: Silva Polaris 177 Type 7, $15, www.silvacompass.com.)
 GPS dongle to geotag your shots. (Nikon GP-1 GPS Unit, $220, www.nikonusa.com.)
 Energy bars to keep you going. (Clif Bar, $2 each, www.clifbar.com.)
 Gaffer tape, which can hold an entire shoot together. (Shurtape Gaffer Tape, from $8 (depending on width/length), www.shurtape.com.)
 A hot-shoe flash for fill or for a main light for insects and flowers. (Canon 580EX II, $420, www.usa.canon.com.)
 A bubble level to keep horizons in line. (Hama Camera Spirit Level, $30, www.hama.com.de.)
 An LCD loupe to nail focus. (Hoodman HoodLoupe Professional 3.0, $80,.) www.hoodmanusa.com
 An ultrawideangle lens to get the full landscape. (Nikon 14-24mm f/2.8G ED Nikkor AF, $1,830, www.nikonusa.com.)
 A collapsible reflector/diffuser to tame direct sun. (Creative Light Reflector Deluxe, from $46 (depending on size), www.creativelight.com.)
 A supertele lens with  teleconverter to bring you eyeball-to-eyeball with faraway fauna. (Sigma 300mm f/2.8 EX DG HSM APO, $3,300, www.sigmaphoto.com and Sigma 1.4X DG EX APO teleconverter, $250, www.sigmaphoto.com.)