It moves the lens farther from the film or digital sensor.
The farther away the lens is,the closer the focus,the greater the magnification.
This extension tube does not affect image quality as there is no optics inside.In comparison,closes up filters are often blamed for degrading image quality.
3 extension tubes:9mm tube (Tube 1) 16mm tube (Tube 2) 30mm tube (Tube 3)
Made of metal (not plastic)
There is no electrical contacts in the extension tubes.Exposure has to be adjusted manually.
Aperture control is not available if you use a lens which does not allow you to manually adjust the aperture(without an aperture ring).
When using the extension ring with DSLR/SLR,the camera should be set in the‘M’mode.
1x Macro Extension Tube For Konica Minolta MD Mount