AAton XTR User Manual - 2.2 Viewing System

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 or-

der 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 profes-

sional 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 manufacturer’s lens mount. Aaton lens adaptors

are available for Arri standard, Arri bayonet, 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, whi-

ch 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 fin-

der appears to have shifted

slightly, rotate the finder 360°

and choose the preferred cente-

red image.