te 1/8 of a turn counterclockwise.On the hyperlong finder, rotate
the knurled ring closest to the eyecup counter-clockwise to close the
shutter.
2.2.6 Adjusting the Viewing Horizon
If the rotation of the image seen through the cameras viewfinder
does not exactly match what is seen through the naked eye, there is
a fine adjustment that can be made to the image’s relative horizon.
Locate the small slotted screw located on the underside of the view-
finder just inside the eyepiece lock ring. Notice that the screw travels
in an elongated cutout. Loosen the screw one turn and, while loo-
king through the viewfinder, move the screw within its cutout in or-
der to adjust the horizontal rotation. When the images seen through
your left and right eyes coincide, lock the screw.
2.2.7 Viewing Screen
The unique concave design of the Aaton fiber optic viewing screen
gives it its superior sharpness and lucid quality. If your viewing
screen possesses a dark blemish or two, don’t be alarmed; these spots
are actually fractured fibers and are inherent in the manufacturing of
fiber screens. Such blemishes, although occasional, are the trade-off
for the brilliant screens which result from the use of this technology.
The XTRprod utilizes an interchangeable viewing screen system
which allows the cinematographer to install the screen which best
suits his particular application(s). Aaton offers ten viewing screens as
standard. (see the Technical Specifications chapter) Specially marked
screens can also be manufactured to order. Contact you local Aaton
representative for details.
Unlike the XTRplus, which uses a universal screen that shifts bet-
ween std 16 and Super16 operation, the XTRprod requires separate
screens for std 16 and Super16 formats.
24
Checking your Viewing
Horizon
here is a simple means of deter-
mining whether adjustment of
the horizon needs to be made.
Mount a zoom lens onto the
camera and rest the camera on
your shoulder in a standard
handheld position. Look
through the viewfinder with
your right eye while also kee-
ping your left eye open.
Compose a frame that includes
vertical or horizontal lines (a
window frame, for example)
and adjust the zoom of the lens
so that the focal length of the
lens generally matches what
you see with your left eye.
Ignore the viewing screen mar-
kings for the time being and
determine whether the rotation
of the image you see through
the viewfinder matches what
you see with your left eye. If it
does not, then a fine adjust-
ment may be necessary
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