AAton XTRprod User's Guide Page 21

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ring is tight enough so that it cannot be inadvertantly unlocked.
2.1.3 Aaton Lens Port
The XTRprod can also be equipped with an Aaton lens port. In
order to install the Aaton port, the ArriPL lens seat and locking ring
must first be removed.
Because the FFD of the Aaton lens port is shorter than most
professional cameras (40mm), the XTRprod, equipped with this
mount, can accommodate most motion picture and still camera lens
mounts. Lenses can be used equipped with an Aaton mount or by
adapting another manufacturers lens mount. Aaton lens adaptors
are available for Arri standard, Arri bayonet and Eclair CA-1, as well
as Nikon and Leica-R photographic mounts.
2.2 VIEWING SYSTEM
2.1 Viewfinder Options
The viewfinder is designed to be fully orientable, providing left or
right side viewing and an upright image in any position.
The viewfinder is equipped with a standard short eyepiece that can
be used for handheld and tripod-mounted operation. For more
comfortable tripod and studio applications, the standard extension
finder can be fitted in place of the short eyepiece. With an Elemak
or Mitchell type dolly, or in situations requiring additional reach,
21
THE CAMERA BODY
The Pechan prism
In order to provide a fully
orientable upright image, the
Aaton viewfinder incorporates
a pechan prism assembly,
which is actually comprised of
two triangular prisms
sandwiched together. On some
viewfinders, depending on the
construction of this prism,
rotation of the eyepiece a full
360° will cause the image in
the finder to shift slightly left
or right.
After attaching an extension
finder, if the image in the
finder appears to have shifted
slightly, rotate the finder 360°
and choose the preferred
centered image.
USER 16 US.sept 6/12/97 17:28 Page 21
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