T10Z5712M Computar 1/3" 5.7-57mm f1.2 10X Motorized Zoom 3 Motors CS-Mount Lens. T10Z5712M is an all purpose varifocal with a 10X zoom ratio suitable for a wide range of viewing angles including long distance surveillance. Used on a 1/3" format camera, it has a 51.8 - 5.6 degree horizontal angle of view. Lens is CS-Mount, comprised of all glass optics, come with locking set screws and a durable metal barrel and mount. Manual Iris Lenses are used primarily for indoor use with stable or moderately variable lighting conditions. Its Focal Length : 5 – 50mm and Iris Range : F1.2 with Max. Aperture Ratio : 1:1.2. This models Down Angle View : 64 – 6.9 degrees and Horizontal View : 51.8 – 5.6 degrees with Vertical View : 39.2 – 4.3 degrees. Its Max. Image Format : 4.8 x 3.6 mm. The high performance Ganz Thermal Imaging Cameras capture high-quality video in all lighting conditions. The cost-effective IP and analog thermal solutions outperform conventional surveillance technologies and are ideal for even the most challenging surveillance environments.