Nikon Close-up Attachment Lens #4T provides an easy way to increase magnification. The #4T can be used alone or with #0, #1, #2, #3T, #5T or #6T close-up attachment lenses. When attached, you can use automatic exposure control and TTL metering. The higher the close-up lens number, the closer you can focus. The attachment lens is equipped with Nikon Integrated Coating to improve contrast and reduce flare. The close-up lens #4T are recommended for lenses with a focal length to 55mm, but works best with 85mm to 200mm. This lens has a 52mm filter thread and 2.9 Diopter.