AAton XTRprod User's Guide download pdf (Page 24)

the eyepiece shutter must be closed any time the camera is running

ﬁlm and the operator’s eye is away from the viewﬁnder.

To close the eyepiece shutter on the standard bellows eyepiece, grasp

the rubber ring at the base of the eyecup and rotate 1/8 of a turn

counterclockwise. On the extension ﬁnder and the old style standard

eyepiece, locate the small tab at the base of the rubber eyecup and

slide it until the shutter completely covers the eyepiece opening. 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

viewﬁnder just inside the eyepiece lock ring. Notice that the screw

travels in an elongated cutout. Loosen the screw one turn and, while

looking through the viewﬁnder, move the screw within its cutout in

order 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 eleven 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

Checking your Viewing

Horizon

here is a simple means of

determining 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

keeping 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

markings 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 adjustment may be

necessary

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AAton XTRprod User's Guide Page 24

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