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This extension tube kit from Computar Ganz consists of six components:
- 40mm tube
- 20mm tube
- 10mm tube
- 5mm ring
- 1mm ring
- 0.5mm ring
The tubes, 5mm and 1mm rings contain threads at both ends and are designed to attach between lens and camera.
The two rings act as spacers and can be used on the thread.
These items reduce the minimum focussing distance on C and CS mount cameras.