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ARRI ALEXA Series User Manual

ARRI ALEXA Series
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228 ALEXA XT Cameras
5. Screw the IFM-1 Reflex Tube into the PL mount, using your fingers.
Do not touch the delicate sensor glass
6. Tighten the IFM-1 Reflex Tube with the two shorter noses (1) of the
wrench (1), with its inscription facing camera-inwards (see detailed
section):
7. Insert the IFM Shim (see next chapter)
CAUTION! Risk of damage and injury from insufficient
distance between lens contact face and Bottom Ring!
The distance between lens contact face and Bottom Ring must be at
least 27.5 mm with an unshimmed PL mount, or 27.68 mm with a
shimmed PL mount respectively, to prevent collision of filter and lens.
Otherwise, even PL mount lenses with a nominal mounting depth of
equal or less than 31.50 mm might damage internal filters and the
camera. Shards from broken filter glass might cause injury.
17.1.3 Shimming the lens mount
In-camera filtration will change your flange focal depth. Therefore, all
internal filters require a properly shimmed lens mount (see Chapter
Safety instructions for in-camera filtration on page 221).
Note: Use only the original shim IFM Shim when filtering with IFM-1.
To compensate for the change in flange focal depth due to the shim, always
insert the IFM Optical Clear filter when no filtering is needed.
When the camera is no longer shimmed for IFM-1, the glassless IFM Empty
Filter Frame must be placed back into the filter position.

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ARRI ALEXA Series Specifications

General IconGeneral
Dynamic Range14+ stops
Resolution4.5K (ALEXA LF), 6.5K (ALEXA 65)
Recording FormatsARRIRAW, Apple ProRes
Lens MountPL mount
ViewfinderOptional EVF (Electronic Viewfinder)
Sensor SizeSuper 35 (most models), Large Format (ALEXA LF, ALEXA 65)
ISO RangeEI 160 - EI 3200 (Base ISO 800)

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