Samsung SLA-12240 Varifocal Lens Dubai Samsung SLA-12240 Varifocal Lens Dubai The Samsung SLA-12240 Varifocal Lens Dubai is a C-mount Motorized Zoom Lens that has a focal length of 12 – 240mm, is intended to be used with a ½-inch CCD sensor and offers 20x zoom. It also comes with built-in presets. Auto Iris feature creates reliable video signals, and it modifies camera to changing light levels. The lens works in the 14 to 122°F temperature range.