Vocas MB-325 matte box - Manual (Page 4)

©Vocas Systems b.v. June 21, 2006 4
Common directions for using this matte box:

This matte box is equipped with a patented variable matte system,
which we call “Eyebrows”. For the reduction of flair these eyebrows can
be adjusted to the focal length of the lens by rotating the “eyebrow
adjustment knobs”.

This matte box can be used as a clip-on matte box, although we
recommend using this matte box on 15mm lightweight rails. To use this
matte box on rails a bars adapter is required. Order #: 0360-0100.
 For maximum flair reduction a “Side flag kit” is also available.
Order #: 0340-0001.
Hints for using this mattebox on wide angle lenses:
These hints are written especially for lenses wider than 5mm.

The adapter rings for these lenses will let the matte box slide 8mm
further backwards over the lens. In this situation the first Filter frame
can no longer be used.
In the second Filter
frame a non rotatable 4”X4” filter can be used. If
this second filter has to be rotated (in the case when a polarize filter is
used) a 4.5”X4.5” filter and filter frame are available.
Order #: 0310-
0002 for the 4.5”X4.5” Filter frame.
Order #: 0380-
0001 for the 4.5”X4.5” Polarize filter.
 The 4”x4” filter frames should be put in the matte box with the “Vocas”
logo facing the cameraman.