AAton Penelope, User Manual

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Aaton Camera body
23
2.1 Lenses
The Arri PL lens port
The Arri PL lens port is the standard mounting system delivered with Penelope
and allows the use of all 35mm Arri PL mounted motion picture lenses. This
lens port is ideal for rental facilities, where a mounting system compatible with
other 35mm cameras is often requested.
The Panavision PV lens port
The PV lens port is the standard mounting system for the Panavision cameras.
This lens port can easily be installed in the Penelope lens holder.
Installing the lens
To install the lens on the camera body, turn the outer locking ring counter-
clockwise. If the port cap is on, remove it. Align the four protruding flanges on
the lens with the four corresponding cutaways in the locking ring and insert the
lens into the camera port so that its flanges rest evenly against the lens seat.
Tighten the locking ring by turning it clockwise until the lens is secured and the
locking ring is set firmly. Make sure the locking ring is tight enough so that it
cannot be inadvertantly unlocked.
Flange focal distance.
Refers to the critical distance from the
lens seat to the film plane. With the PL
port, the precise FFD of Penelope is
52mm -30 to -40 microns as measu-
red with a depth gauge in the lens port.
With the PV port, the FFD is 57.15mm
-60 to -70 microns
It is recommended that these toleran-
ces be checked and maintained by a
qualified technician. The combination
of FFD and back focus distance of a
lens directly affect the precise focus
(and resulting image sharpness). Make
sure these critical measurements are
strictly upheld. When using an unfami-
liar lens for the first time, check that
the eye focus matches the tape-
measured focus marks on the lens,
and/or shoot a focus test.