Don't let low lighting situations ruin photos. With the Contax TLA 200 shoe mount flash, photographers can achieve perfectly lit photographs without fail. The impressive battery life of the lens ensures that it will keep working throughout a photoshoot or event, such as a wedding or a concert. The guide number of 68 feet allows photographers to position the flash however they want, which helps produce well-lit portraits in any lighting environment. The field of illumination can be increased or decreased easily, as the 28 mm to 90 mm zoom range offers a wide range of light options. This convenient lens is a worthwhile addition to any photographer's collection.