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A compact macro bellows for Canon EOS EF mount DSLRs which retains full electronic coupling of the camera and lens, providing open-aperture metering and auto diaphragm operation. Lenses can be used in normal or reversed position. For high macro magnifications beyond lifesize (1:1) reproduction, a bellows is the most flexible option, and the beauty of the Novoflex BAL-EOS is that it doesn't need specialist lenses; a typical zoom will still produce excellent results, but reversed or macro lenses will enable even greater magnifications to be achieved.
Any EF-mount lens (up to a maximum diameter of 90mm) can be used with the bellows. The lens can be mounted either in normal or reversed position. The filter thread size is 58mm, but this can easily be adapted to other sizes by means of a stepping ring.
Lenses of 50mm focal length or longer are typically mounted normally. Wide-angle lenses provide best results - and higher magnifications - if they are mounted in reverse position.
Length of bellows extension will determine the magnification. Focusing is done by moving the entire bellows assembly back and forth (note that although autofocus is supported, it becomes redundant at macro distances and is best turned off). For use on a tripod, a focusing rack will greatly facilitate operation.
Magnification can be calculated by dividing the bellows extension in mm over the focal length of the lens in mm.
The BAL-F bellows system is flexible, so the RETRO part of the auto bellows can be removed and other Novoflex adapters installed to enable use with enlarging lenses, film cameras, slide copiers etc.
Included in the package
BAL-F bellows unit
FLEX-RETRO lens side adapter
RETRO-FLEX camera side adapter
Technical specifications (BAL-F):
Size: h = 103mm, w = 130mm, l = 180mm
Min. Extension: 29mm
Max. Extension: 116mm
Tripod connection: 1/4 " and 3/8" and ARCA UniQ/C-compatible dovetail profile