Apo teleconverter

Learn about the state of the art technology put into Sigma lenses to ensure high quality images. Get more reach with what you have. Check the compatibility of your lens with the teleconverter chart. The MTF is just one criterion used to evaluate lens performance. Technical Support: 1. This website requires cookies to provide all of its features.

For more information on what data is contained in the cookies, please see our Cookie Policy page. To accept cookies from this site, please click the Accept button below. Category: Teleconverter. Magnification of focal length of 1. Buy Now. Overview Equipped with 1 SLD Special Low Dispersion glass element for maximum image quality, the new Sigma Global Vision teleconverters utilize a splash and dust proof construction for long lasting durability.

Then, attach the lens and the Tele Converter to the camera body. If you attach the Tele Converter to the camera body first it may cause a malfunction. Regardless of exposure mode, correct exposure can be obtained. On the lists, the lenses marked "AF" will retain auto focus operation when used with a Tele Converter. The lenses marked "MF can only be used for manual focus.

Some lenses will be operated AF even mentioned "MF", however, be aware that these lenses cannot focus precisely by auto focusing.

In addition to lens compatibility, the Leica user also has to be aware of camera-compatibility , as the R-bayonet has undergone several changes over time. Moreover, there are some compatibility issues with Leicaflex cameras, which are detailed in the textbox below. Mounting the 1. When the modified extender is on the Leicaflexes, the auto-diaphragm is functional, but metering is stop-down only, not at full aperture.

No, the ROM version will not fit, because the chip interferes with the Leicaflex mount. Moreover, the non-ROM 2x APO extender has an R-only flange and will not fit any of the Leicaflexes, as the rear of the extender gets into the way of a light baffle at the top of the Leicaflex and SL mirror box.

However, the extender's mount can be modified to work on the SL2. No, the Extender-R Leica order number that is dedicated for use with Leicaflex cameras only offers stop-down metering. The ROM chip on the tele-converter makes it possible to transmit certain lens-specific information to the Leica R8 or R9 cameras.

However, the strip of electrical contacts on the Extender-R does not have any benefit if used with a non-ROM lens or with a camera other than the R8 or R9. For which Leica lenses is the loss of image quality particularly noticeable when an Extender is attached?