New Nikon CFI Plan Apochromat 4x objective, infinity corrected for Eclipse series microscopes. Features longer working distance (15.7mm) with high Numerical Aperature (0.2) and is designed to correct all optical abberations throughout the visible spectrum across the 25mm field of view. Superior image flatness and color reproduction, plus resolving power at the theoretical limit of today's optical technology. List Price: $1,343.00.