There are also telescopic sights with variable magnification. The magnification can be varied by manually operating a zoom mechanism. Variable-power sights offer more flexibility regarding shooting at varying ranges, targets and light conditions and offer a relative wide field of view at lower magnification settings. The syntax for variable sights is the following: "minimal magnification – maximum magnification × objective lens", for example "3-9×40" means a telescopic sight with variable magnification factor between 3 and 9, and a 40 mm objective lens. Variable-power telescopic sights in the low magnification range (1-4×, 1-6× or 1-8×, even 1-10×) are informally referred to as "low-power variable optics" (LPVO).