12X Zoom, 3 mm Fine Focus, Coax

The NAVITAR 1-50487 12X Zoom, 3 mm body tube contains the core zoom mechanism and determines the mechanical nature of your zoom system.  Fine Focus is used For applications without separate moving support systems, the Fine Focus body tubes offer focus over a 3 mm (coaxial models only) or a 12 mm (non-coaxial models) Fine Focus axial distance at the object. Available in manual and motorized versions.

The aperture function allows the user to adjust the amount of light that flows through the system without adjusting light source intensity.  The aperture also can improve depth of field when it is adjusted properly.
 

Detents Obtain specific "stops" throughout the zoom range by selecting a body tube with Detents. Typically used in systems where each position requires calibration, detents allow for pre-set stops at 0.58X, 2X, 2.5X, 3X, 3.5X, 4X, 4.5X, 5X, 5.5X, 6X, and 6.5X on the zoom scale.
 

Coaxial / on axis illumination is most effective when imaging flat specular surfaces.  By integrating the coaxial illumination port, a collimated, diffuse and uniform illumination source is integrated into a zoom lens.

Available Configurations Include: