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6. Optics
6.1.
Lenses
All 35 format lenses with a PL-Mount can be used
on the ARRIFLEX D-21. Lenses with a Ø 41 mm
standard or bayonet mount cannot be used.
Heavy and long lenses, such as zoom lenses, must
be supported at all times.
Note: Although the filters in front of the sensor are
coated and polished using high-precision
technologies, slight variations may cause a
shaded structure in the output image depending
on the aperture of the lens. Closing the iris
beyond T11 therefore is not recommended.
Lens Mount
ARRIFLEX D-21 and D-21 HD are equipped with Lens
Data System contacts
➪
image
for direct communication
with LDS lenses. The Lens Data System collects essential
lens and camera information for display on a dedicated
remote display and enables iris compensated speed
ramps in conjunction with a Wireless Remote Control.
These features are also available for non-LDS lenses,
where focus, iris and zoom information is calibrated
through the lens motor (CLM-2) position, which is then
stored into accessories, such as the Lens Data Archive
(LDA) or the Wireless Remote Control (WRC-2).
Lens Mount Position
The lens mount should always remain in Super
35 position (2)
➪
image
, although it is possible to
rotate the lens mount to Normal 35 configuration
(1). Unlike with 35 mm cameras, this also
applies when anamorphic lenses are used.