Extension Tubes 25 (NOT AUTO)
This tube is used as adapters to mount OM System lenses on
the OM body to take close-ups.
The 25mm extension tube can be used to extend the magnification
range of the Zuiko Macro Lens 50mm 1:2 and 1:1 (lifesize).
For life-size pictures, however, most recommended is the 1:1
Macro 80mm F4.
NOTE:
The depth of field is extremely small in close-up work. Therefore,
not only correct focus but also a small aperture such as F8 or
F11 are recommended.
Even a smallest movement of the camera affects pictures especially
when enlarged to great extent. To avoid this, make it a point
to use a focusing stage, tripod and cable release whenever available.
Exposure is adjusted by stopping down the lens aperture, but
focusing is easier at the full aperture. |