When saving images for transmission or web use, consider carefully whether the GPS data is a desirable thing to include, given the particular image location and subject matter. More on that below.
The use of GPS will arguably be one of professional requirements: a botanist or researcher documenting the location of a plant or animal, mapping for technical articles, law-enforcement work, etc. In this regard, both brands offer good solutions. However, there is a certain coolness factor in seeing one’s photos pop up on a Google map in Adobe Lightroom (more on that later), so GPS might have broader appeal than professional documentary requirements.
The Canon and Nikon GPS units both have the usual generic GPS limitations: in narrow canyons, heavy tree cover, etc, the GPS signal can be impaired or completely unavailable. Since I regularly hike in such locations this was a concern, but in in my local testing, the concern proved unwarranted in “reasonable” locations.
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