Global Positioning System (GPS) for Photographers

How GPS technology works, the GPS unit receives signals from at least three U.S. government satellites orbiting above the Earth. Location and distance is triangulated and displayed on the LCD as coordinates, typically latitude and longitude, because these numbers account for the curvature of the Earth.

Since every square foot of the planet has its own GPS "address" each position is represented by a unique set of coordinates. All GPS receivers will have various ways this information is displayed or converted into other visual representations.

Most GPS units will give you compass readings, an audible warning if you stray off course and estimated time of arrival based on the distance and your current speed.

GPS Units also eat battery power like a starving dog. With continuous use, which is the whole point of having one with you, you’ll want extra batteries. A lot of units take AA batteries, and others require a rechargeable lithium-ion battery. Depending on the unit and how much power it needs, you’ll get anywhere from five to 16 hours of use.

Always bring more batteries than you think you’ll need.[g index]

Portable GPS Units

Garmin GPS

Garmin Etrex Venture HC GPS Receiver - High-Sensitivity, WAAS-Enabled GPS Receiver Provides Peak Performance In Any Environment Built-In Basemap Includes Lakes, Rivers, Cities, Interstates, National & State Highways, Railroads & Coastlines Features A 1.7-InchH X 1.3-InchW Screen With 256-Level Color Tft Usb Compatible For High-Speed Map Downloads 24 Mb Of Internal Memory Allows User To Load Waypoints & Routes From The Included Mapsource Trip & Waypoint Manager Software
Garmin Map 64 MB 60Csx With Barometric Altimeter & Compass - High-Sensitivity GPS Receiver Color-Handheld Mapping Ideal For Both Marine & Outdoor Use Bright, Sunlight-Readable Color Tft Display 64 Mb Micro Secure Digital Card For Storage Of Optional Map Detail Fast Usb Connectivity Makes Loading Charts & Maps Quick & Easy
GARMIN 010-00630-00 Etrex Vista GPS Receiver - High-Sensitivity, WAAS-Enabled GPS Receiver Provides Peak Performance In Any Environment Lightweight, Compact & Waterproof Features A 1.7-InchH X 1.3-InchW Screen With 256-Level Color Tft Built-In Basemap With Automatic Routing Capability Connects To Computer'S Usb For High-Speed Map Downloads
Garmin Etrex Legend GPS Receiver - WAAS-Enabled Smallest GPS On Market With North & South America Basemap Perfect For Outdoor Person & Adaptable To Be Fully-Functional For Vehicle Use Download From Metroguide Usa Cd-Rom (Not Included), Detailed Street Map Info, Addresses & Points Of Interest With Phone Info 8 Mb Of Available Flash Memory

Magellan GPS

Magellan Meridian Color Handheld GPS Navigator (16 MB) - Full-color 120 x 160 pixel display; backlit for easy night-time use Uses WAAS technology for accuracy to within 3 meters or better 16 MB of built-in memory includes mapping of North America and unlimited expandability Rubber armored construction is impact resistant and waterproof Runs for up to 13 hours on 2 AA batteries; includes USB interface with cable
Magellan eXplorist 210 Handheld GPS - Compact 14 channel WAAS GPS receiver with rugged, outdoor-sports design 22 MB available memory for downloading optional MapSend maps and digital content 10 MB built-in basemap includes roads, parks, waterways and more Includes Magellan Geocache Manager software 2.2 x 4.75 x 1.3-inches (W x H x D); 6.1 ounces; and 2.3-inch backlit display

Macsense GEOMET'R GPS Receiver for Nikon

GEOMETR GPS RECEIVER NIKON DSLR REALTIME GEOTAG - For Nikon D700, D300, D3, D200, D2Hs & D2Xs, and Fujifilm S5 Pro DSLRs. Geomet'r GPS Adapter for Nikon and Fujifilm DSLRs is first product of its kind that brings real-time geotagging to photos taken on Nikon and Fujifilm DSLR cameras. Now support Nikon D300 and D3.Geomet'r is an adapter the size of a matchbox that can be anchored on the flash shoe, and connect to the IO port of the Nikon/Fujifilm camera body. Using the host camera to power its internal precision circuitry to connect wirelessly to 20 satellites and obtain an accurate reading of the geological location of the photo taken. Now you can log every photo taken during a road trip and view them on the Google map back home and plot and review your route. No longer do you need to record the location and circumstances of the photo taken; Geomet'r will do that for you.Other similar GPS Adapter sell for $400. Now you can add an indispensable accessory to your Nikon and Fujifilm DSLR camera and enjoy the latest GPS mobile technology.Photos taken are geotagged with longitude, latitude, and altitude values. Values are written to standard EXIF header data of each photo file. Geotagged values can be viewed using standard photo viewing applications such as Apple iPhoto, Yahoo! Flickr, Photoshop Elements, Google Picassa, and many others photo viewing apps that can display EXIF header values. Photos uploaded to Flickr or Picassa network albums can get mapped automatically to the Google or Yahoo maps.Software Included (but not required): Application Utility for both PC and Mac for you to view and locate your photos on the Google Map. Application works on Mac OS X 10.3 or higher, and Windows 2000, XP, and Vista.

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