Nikon BD PlanApo 150x Objective - 210 Tube Length

The Nikon BD PlanApo 150x (SKU 79293) is one of the most capable objectives in Nikon's finite tube length reflected-light lineup. The PlanApo correction — the gold standard in microscope optics — corrects for both chromatic and spherical aberration across the full field, producing images with outstanding sharpness, color accuracy, and flatness from edge to edge. The BD (Brightfield/Darkfield) design adds versatility, enabling both standard brightfield surface imaging and darkfield illumination for enhanced contrast on low-reflectance features. At 150x, it occupies a unique position in the magnification range — above the common 100x ceiling but without the immersion requirements of oil objectives — making it ideal for the most demanding dry surface inspection tasks. With an M25 thread and 210mm tube length, it is a direct fit for the Nikon Optiphot Reflected Light microscope and compatible 210 TL systems. This listing is for a lightly used unit with flawless optics — an exceptional opportunity to acquire a premium Nikon apochromat at well below new cost.