This close-up accessory is placed between the camera body
and lens to enable high-magnification photography. Eight electronic contact
points allow communication between the camera and lens to continue as usual.
The magnification differs according to the lens.
The result of using extension tubes is that the distance
from the back of the lens to the film surface is longer, which means you can
take photographs at shorter distances to the subject.
Extension tubes are thus
commonly used for macro photography and sometimes for closeup portraits.
When using the camera's TTL metering system, no exposure
compensation will be required (exposure compensation is required for handheld
meters).
This updated version II is now also fully compatible with
Canon Digital EF-S lenses, as well as standard photo EF and TS-E lenses.
Extension Tube EF 25 II is recommended for lenses with a
focal length of 50mm and up (EF-S 18-55mm can be used at middle and tele zoom
settings).
Shortens focusing distance of lens
Compatible with EF-S lenses, as well as EF and TS-E lenses
White-index mark provided for digital SLR EF-S lenses