Sony VCLHGD0758 0.7x wide Conversion Lens for DSCF717 Broaden your field of view with this high grade lens.Lens Design: 4 groups, 4 elements. Offers unmatched ease of use, making it the accessory of choice for reducing distortion and boosting image detail in a wide angle format.0.7X wide-angle converter for Sony 58 mm diameter lenses. High grade lens in aluminum housing for superb durability. Twice the detail at the edge of an image.