The dedicated APO teleconverter can be mounted between select lenses and the camera body to increase the focal length by the power of 2.0x. The new multi layer coating reduces flare and ghost, which is a common problem with digital cameras. They demonstrate best performance with DG series lenses. They also offer maximum photography magnification by 2.0 x, without any variation in the minimum focusing distance. Compact and lightweight, these teleconverter convert your lenses into longer focal-length lenses, so you don't have to do a lot of unnecessary footwork.

The dedicated APO teleconverter can be mounted between select lenses and camera body to increase the focal length by the power of 1.4x. The new multi layer coating reduces flare and ghost, which is a common problem with digital cameras. They demonstrate best performance with DG series lenses. They also offer maximum photography magnification by 1.4 x, without any variation in the minimum focusing distance. Compact and lightweight, these teleconverter convert your lenses into longer focal-length lenses, so you don't have to do a lot of unnecessary footwork.

SuperDigital Store SIGMA 1.4X EX DG Tele Converter Lens Pentax Mount Features: The new multi layer lens coating and lens design reduce flare and ghost, which is a common problem with digital cameras and also creates an optimum color balance through the entire zoom range. Usable Lenses and Combinations Sigma APO Tele Converter 1.4x and 2x are dedicated Tele Converter lenses, which should be used with listed lenses only. AF function of Pentax mounts cannot be used with SFX/SF7 cameras. Do not use

Super Wide-Angle Conversion Lens w/MACRO for Nikon 18-200mm AF-S VR Nikkor Includes Macro Extender Lens and 67mm Adapter Ring VIVITAR Series-1 Quality Super Wide Angle Screw-On Conversion Lens fits Professional Lenses such as the Nikkor 18-70mm or 18-135mm; the Canon EF-S 17-85mm or EF 28-135mm; the Pentax DA 50-135mm, etc. Screws directly onto 72mm filter mounts. Includes Adapter Ring for 67mm lenses. Create an image from Wide to SUPER-Wide to FISH-EYE depending on the Focal Length of your Base Lens IMPORTANT: This is a High Quality LARGE Conversion Lens for ONLY those lenses with large filter diameters. It will screw directly onto any 72mm lens. With the proper Adapter Ring it can be used with 67mm lens fronts (adapter is included). You will appreciate the Rubberized Grip Ring that aids... Less