Vello AF EXTENSION TUBE SET User Manual page 2

INTRODUCTION
Thank you for purchasing the Vello Extension Tube Kit. Extension tubes
provide a practical way of adding macro optical performance to SLR camera
set ups. The Vello Extension tubes can be attached to a variety lenses for
different effects, and are much less expensive than dedicated macro lenses.
The extension tubes can be stacked for an increase in magnification
allowing for 7 different combinations.
Please read this instruction manual before the use of this product.