The Axio Imager from Carl Zeiss features several new innovations in microscope design to improve contrast and resolution. The Kohler lighting principle is now utilized through the light train improving homogeneity and contrast with a background so black, it has a new name: “Advanced Darkfield.” A 7-position objective turret allows usage of 1.25X through 100X objectives for a total magnification range of 12.5X to 1000X to the eyepieces, without the need to remove and switch objectives in the turret.