ARRI ALEXA Series User Manual

Lens Support 61
Figure 37: PL mount LA-PL-1 with index pin
10.2 Lens Support
Heavy lenses may require additional lens support. Using a lens support
guarantees that the weight of the lens will not influence the flange focal
depth and reduces stress on the lens mount.
To support a lens use 15mm studio or 19mm studio rods and an
appropriate lens bridge. 15mm studio rods require a bridge-plate with
15mm studio rod support, such as a BP-3/BP-9 + BPA-1, while 19mm
studio rods require a bridge-plate with 19mm studio rod support, such
as a BP-12 or BP-5/BP-8 + BPA-1.
Mount the lens bridge LS-10 for 15 mm studio rods by pushing it onto
the rods from the front. Mount the lens bridge LS-9 for 19 mm studio
rods by clipping it on the rods from the top.

ARRI ALEXA Series Specifications

General

Dynamic Range	14+ stops
Resolution	4.5K (ALEXA LF), 6.5K (ALEXA 65)
Recording Formats	ARRIRAW, Apple ProRes
Lens Mount	PL mount
Viewfinder	Optional EVF (Electronic Viewfinder)
Sensor Size	Super 35 (most models), Large Format (ALEXA LF, ALEXA 65)
ISO Range	EI 160 - EI 3200 (Base ISO 800)