In Directions magazine, GeoSpatial Experts president Rick Bobbitt writes about the camera options for geotagging photos. Interestingly, and appropriate to an industry publication like Directions, he divides users into three groups: GIS professionals, non-GIS business professionals, and recreational photographers. Most of what I’ve seen about geotagging has been at the consumer/recreational end of things; but, apart from pro needs like differential correction, it’s possible to use the same gear in each category.