Manual 6:1 Macroscope for detailed Documentation, Measurement and Evaluation. The Leica Z6 APO is a fully apochromatic zoom system with excellent light transmission for high contrast, high-resolution, detailed analysis. The single beam path provides 2D images and ensures parallax-free imaging. the Leica Z6 APO with 6.3:1 zoom offers the highest numerical aperture: 0.117 nA (351 Lp/mm resolution) with the 1× plan-apochromatic objective