The Topo50 map series is sourced from Land Information New Zealand (LINZ), the agency responsible for producing New Zealands official, authoritative topographical maps. Emergency services, search and rescue organisations, the defence forces and government agencies such as the Department of Conservation (DOC) are using the new map series.
Quickmap handles these different coordinate systems by warping the image to the correct location on the fly. Old NZMG based rasters such as Air Photos, and new NZTM based rasters all draw at the same speed, making your transition from the old to the new simple and easy.
The Quickmap Topo50 Map Layer is included as part of the Aerial Imagery Expansion Pack.