Kenko Macro Automatic Extension Tube Set DG for Canon EOS

Works perfectly well with my lenses. Does what a good job for macro photography without buying an expensive lens.

The Kenko Macro Automatic Extension Tube Set for Canon EOS is a set of 3 extension tubes that you can mix and match to give you different levels of "magnification" (more on this in a bit). You get 12mm, 20mm and 36mm tubes that you can use singly or mix and match to give you a maximum of 68mm. Extension tubes do not contain any glass/optics and are designed to enable a lens to focus closer than its normal minimum focusing distance. As such they effectively magnify your subject. The extension tubes are mounted between your lens and the camera body to create more distance between the lens and your sensor. By moving the lens further away from the camera sensor, the lens is forced to focus much closer than normal and your image is essentially cropped. The greater the length of the extension tube, the closer the lens can focus. Basically the sensor captures a smaller amount of the image with the rest of the image being outside of the sensor. You have to take into account the focal length of your lens when applying extension tubes. For example, if you have one of the 50mm Canon primes, you cannot use the full 68mm of the extension tubes as you will never be able to focus the object. I done a great deal of research into extension tubes and which ones to get before deciding to go with the Kenko Automatic tubes. The automatic part of the Kenko set is that each tube has a series of connectors which relay information from the camera to your lens and vice vera. Thus all the EXIF data is passed on, auto focus, aperture etc. all work just as if the lens was connected directly to your camera. The Kenko tubes work with both APS-C and full size cameras and lenses (basically EF (Full Frame) and EF-S (APS-C) lenses). I've tried out a variety of lenses with this Kenko set including but not limited to 18-135 EFS, 70-300EF and 100L EF Macro lens. All the lenses I have tried have worked without problem. I have even used this extension set along with a Metabones III adapter to on my Sony A7 full frame again without incident. By giving you three separate extension tubes you have much greater flexibility in the amount of magnification you desire and working with a proper macro lens (e.g. Canon EF100L 2.8 USM Macro) you can get extremely close into a subject. You can however use these lenses to turn a non-macro lens into a sort-of macro if you don't want to spend the money specifically on a macro lens (if you are interested in macro photography you really do need a specific macro lens). For example I used these extension tubes with my 70-300mm lens to get some quite detailed and sharp images of flowers and insects. When shooting macro, you have a very narrow depth of field and it is also harder to keep a subject in perfect focus (a tripod really is a must). Using extension magnifies these effects. The only downside to the Kenko set of extension tubes if the price. They are well constructed, fit tightly and work very well but I still think $200 is a little much when all they really are is a set of tubes and connecters (no optics). Overall a great addition to a macro photographers toolkit and I carry these around in my camera bag everywhere I go.

Cheaper option to improve my macro photography! Works a treat.

These extension tubes were of solid construction and auto focus lens motors worked great on my Rebel EOS T4i. Appropriate red and white Canon lens markers make it a cinch for quick installation or removal.

Habe ähnliche Ringe, allerdings aus Plastik schon getestet. Diese hier allerdings schleifen die Kontakte vom Objektiv durch was doch nützlich sein sollte. Die Verarbeitung ist mit der "billigen" Plastik Version nicht zu vergleichen. Stabiler, nicht ganz so wackelig und eine sehr saubere Verbindung. Die Kontakte funktionieren 100%ig und die Kamera erkennt keine Probleme. Aber,... Leider hat meine Canon 50D mit EF 18-200 mit dem größten Ring so seine Probleme die Schärfe selbst einzustellen. Dies scheint aber nicht an den Ringen sondern am veränderten Abstand zum Sensor zu liegen. Die ersten beiden Ringe funktionieren fehlerfrei, wobei allerdings beim mittleren Ring leicht auch Fehlschüsse beim Scharfstellen vorkommen. Mit manuellem (MF) Fokusieren klappt die Sache recht solide und es werde wegen der Kontakte weiter Daten von Objektiv an die Kamera übertragen. Wie gesagt, kleine Einschränkung. Billiger als ein hochwertiges Makro Objektiv auf alle Fälle.