The 18-300mm f/3.5-6.3G lens (not to be confused with the 18-300mm f/3.5-5.6G lens) is a telephoto superzoom lens manufactured by Nikon for its line of DX DSLR cameras. As with other DX format lenses, the smaller image circle makes it compatible only with APS-C-sized image sensors. If used on a 35mm film SLR, vignetting will occur; however, the lens can be used on an FX DSLR because the camera can be automatically or manually set "DX Crop Mode", eliminating vignette, but also reducing the image area from an FX-size sensor to a DX-size sensor