The precision coaxial focusing and low-position coaxial stage controls are a pleasure to use and deliver smooth, reliable performance. The higher-quality semi-plan DIN optics provide superb optical clarity at 40, 100, 400, and 1000x magnification with 80-85% flatness of field. Other features like the reverse position objective turret facilitate slide changing and ease of operation. The bright 3-watt LED lighting with variable intensity control, 1.25 N.A. Abbe condenser, and iris diaphragm with swing-out filter holder provide great contrast control.