The FreePower C1Automatic Macro Extension Tube Kit an affordable alternative to expensive macro lenses. The rings have contacts that enable the transfer of information about the exposure parameters and autofocus. The set is designed for optics and cameras with Canon EF and EF-S bayonets.

The rings placed between the camera body and the lens allow to increase the distance between the lens focal plane and the photosensitive material in the camera (matrix) and thus obtain a larger scale of mapping. The lack of optical elements means that the rings do not affect the optical correction of the lens. The rings can be used individually or together.

The ring bodies are made of plastic and the bayonets are made of aluminum.

Specs:

• Dimensions: 8,2 x 7 cm
• Ring tickness: 13 mm / 21 mm / 31 mm
• Weight: 135 g