Custom Air Photo Mosaics

A mosaic is a photographic reproduction of a series of aerial photographs put together in such a way that the detail of one photograph matches the detail of all adjacent photographs. Mosaics are, for the most part, reproduced at a much smaller scale than the original photography, and consist of three main types: uncontrolled mosaics, semi-controlled mosaics and controlled mosaics.

Uncontrolled Mosaics

  • Prints are laid out so as to join together in a "best fit" scenario.
  • Prints may be tone-matched.

Semi-Controlled Mosaics

  • Most mosaics produced at NAPL are semi-controlled mosaics.
  • The prints used in the mosaic are tone-matched but not rectified.
  • Prints are laid down to fit a map base of the same scale.
  • A title and scale may be added.

Controlled Mosaics

  • Clients must supply a map base as well as a minimum of three (3) ground control points per print.
  • Prints are tone-matched and rectified to fit the map base.


Semi-controlled mosaics are prepared by the National Air Photo Library at a rate of $45.00 per monochrome image used, or $68.00 per colour image used. Copy charges are extra. Rates for uncontrolled and fully controlled mosaics are available upon request.

Continue to find out more about The Collection at National Air Photo Library and Purchasing aerial Photography.

To locate air photos see the Earth Observation Data Management System.