The NOVOFLEX Automatic Bellows is a combination bellows unit and macro focusing rail, and allows for open-aperture metering by employing connections which will close the diaphragm only at the moment of exposure.
Using bellows is the classic and proven path to macro and micro photography.
Note: Due to the protruding prism design of the EOS 1D series the EOS 5D, the bellows can not attach directly to these cameras. As a solution, an "extension tube" can be used to provide more spacing, but that will also change the focal length.
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