Aaton 35 - Panavision
Aaton 35 - Panavision
Aaton 35 - Panavision
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
28<br />
2.5.1 Concept<br />
For a few years now, <strong>Aaton</strong> has inserted a spacer between the lens<br />
port and the camera body. This thin (0.3mm) metallic ring is responsible<br />
for the precise distance between the lens port seat and the<br />
film plane called the flange focal distance (FFD), and therefore it is<br />
also mainly responsible for the sharpness of the images.<br />
In order to change the FFD of the AATON <strong>35</strong>-III, simply change<br />
the spacer, and only the spacer. Do not polish any other surface, or<br />
insert anything else between the lens port and the film plane. For<br />
fine adjustment of the FFD, order some aluminium spacers<br />
(0.<strong>35</strong>mm) from your <strong>Aaton</strong> agent, and then safely change the FFD<br />
of your camera.<br />
2.5.2 Polishing a Spacer<br />
In order to fine-adjust the thickness of a specific spacer, <strong>Aaton</strong> carries<br />
a specific tool (ref <strong>35</strong> 310 32) designed to hold the spacer firmly<br />
and evenly against polishing paper. When polishing a spacer, always<br />
work on a perfectly flat worktable or stone, and be sure to firmly<br />
hold the tool.<br />
2.5.3 Changing the Spacer<br />
The spacer is placed between the PL lens port and the camera body’s<br />
titanium base. First, remove the lens locking ring: screw two or three<br />
turns its stop (placed on the bottom, inside the PL port), and turn<br />
the ring counterclockwise. Remove the PL port by unscrewing its 6<br />
screws. Then gently remove the aluminium spacer .<br />
Once you have placed a new spacer, install the PL port, then the<br />
lenses locking ring, and do not forget to unsrew two or three turns<br />
the locking ring stop.<br />
2.5.4 Adjusting the Viewing Screen<br />
Because you have changed the distance separating the base of the<br />
lens and the camera body, the image on your viewing screen might<br />
now appear to be less sharp than usual. Most likely, you may need