Lens system from Navitar offers a 6.2:1 zoom ratio
The NUV-VIS Zoom imaging lens system operates within a spectral range of 330 to 700 nm and offers a 6.2:1 zoom ratio. It is designed for a 2/3-in. sensor and works with appropriate wavelength infinity-corrected microscope objectives. It is motorized for easy magnification adjustments, but can be modified for manual actuation.
Navitar
Rochester, NY
www.navitar.com