&lt;b&gt;Tamron 5 MP Lens P-Iris 8-50 mm F1.6&lt;/b&gt;&lt;br /&gt;&lt;br /&gt;This Tamron varifocal 5 megapixel CS mount lens has a focal length of 8  50 mm and the fast aperture (F-number) is F1.6. The P-Iris lens is specially made for cameras with support for P-Iris technology and supports cameras with up to 5 megapixels. The lens is compatible with selected cameras from AXIS P13 Network Camera Series.