Key Product Features
- 3 Ring Macro Extension Tube Set For Canon EOS EF
- 3 Ring Macro Extension Tube Set For Canon EOS EF
These tubes are manual tubes and do not communicate electronic functions, such as autofocus or auto exposure control, between your camera body and mounted lens; both manual focusing and manual exposure control must be used. When used with lenses without a manual aperture ring, exposure can only be controlled by changing the camera's shutter speed while maintaining the native preset aperture of the lens (this will be the smallest f/stop on Canon lenses). Due to the screw-in design of the manual extension tubes, the lens may not sit directly upright but will, however, function normally. Do not to over-tighten screw-in tubes to ensure easy removal of each tube. Additionally, when using the extension tubes, you will lose the ability to focus to infinity.