Nikon CFI Plan Apo VC 60x Oil Objective, infinity corrected for Eclipse microscopes. Features longer working distance (0.13mm) with high Numerical Aperature (1.40) and is designed to correct all optical abberations throughout the visible spectrum across the 25mm field of view. The VC Plan Apo optics expand the spectral correction range into the violet lines, offering improved, crisper, cleaner images across a broad range of observation conditions. Superior image flatness and color reproduction, plus resolving power at the limit of today's optical technology.