The-Sony VCL-ECU1 18mm f/2 0-8.0 lens is a wide-angle tele-converter lens that will improve your current lens and camera, giving you a powerful capacity to shoot landscapes or work in tight spaces to produce deeper, richer, and clearer images. It does this by opening up the scene, allowing you to get more detail in the frame. It is simple to use; just attach the conversion to your current 16mm NEX series and start shooting. The device works by focusing on and attaching to the 16mm host lenses itself, so there are no contacts for communication with the camera, almost like a filter but with more technology and functionality. The EXIF data displays 16mm, so the cameras themselves don’t know it’s mounted. There is no reason why it won’t give you great results in video mode too. The Sony VCL ECU1 0.75x converter provides an 18mm equivalent focal length for wide-angle shooting with the 16mm f/2.8 E-mount. It opens up aperture from F2 (and can close as far as f8). It can be used as an autofocus or manual focus, and because it has a fixed length (18mm), it is considered a prime lens. With an aperture that can bring plenty of light into the photographic device, this converter makes it possible to take vibrant pictures in low lighting conditions too. Capture vivid portraits in dull or bright light as well as outdoor images of landscapes, nature, and sports. This Sony accessory adds just 4.41 oz. of weight to your photographic kit. As a lightweight converter, it is easy to carry and to use, and its size makes it convenient to mount on a Sony DSLR. Photographers can also use these accessories with a compatible conversion lens to enhance pictures with additional magnification. Sony designed these pancake lenses for use with different styles of converters. One is called a fisheye and the other is an extra wide 0.75x angle converter. The full frame 12mm converter and full frame 18mm converter provide the same coverage as this one, and due to the f/3.2-f/3.5 aperture, you get less light loss. When you mount this converter on the from of your camera's optical device, you notice it can be mounted in any position, and even if it is upsdide down you still get the same, clear image quality. The Sony VCL 18mm f/2 0-8.0 lens is made from aluminum alloy material with a silver finish. The converter comes with a built-in hood that can’t be removed. The front and rear covers have plastic covers the fit snugly in place. These front and rear caps protect the lens from damage. This Sony gadget is designed for use with your NEX cameras and with the SEL 8. It gives you a broader frame with which to compose your shots so that more of the surroundings can be included in the image. This wide angle Sony VCL ECU1 converter is a handy lens to take if you don't want to carry a lot of extra accessories but want to take an occasional wide angle shot.