Creating A Lens Table - ARRI ALEXA Pocket Manual

Creating a Lens Table

Each ALEXA camera contains an inbuilt basic remote
control web interface that can be accessed through
an Ethernet connection using the Bonjour protocol.
Part of this web interface is the 'LDA' (Lens Data
Archive) tab that allows creation and storage of new
lens tables to the ALEXA camera.
1. Connect the camera to a computer
2. O pen the web browser on the computer that is
connected to the camera.
3. E nter the address alexa####.local, with ####
being the camera serial number.
4. Open the 'LDA' tab in the ALEXA web browser.
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5. C alibrate the lens motors by hitting the 'Calibrate'
button on the LDA browser screen. Alternatively
calibrate the motors by using the 'Calibrate' func-
tion in the camera or the WRS hand unit. After
performing the calibration of the lens motors,
the respective lens scales are being displayed on
the LDA browser screen. The green '+' symbol
indicates the current position of the lens ring.
6. F ill in the lens descriptive fields. Lens descriptions
will be shown on LDS screens or embedded as
metadata:
• Company: The lens manufacturer. Will not be
embedded as metadata.
• Description: Lens description that will be
displayed in the camera/WRS screen and
embedded as metadata.
• S erial Number: Lens serial number will be
embedded as metadata.
• Focal Length: Focal length of a prime lens.
Will be shown on LDS screens and embedded
as metadata. Enter '0' (Zero) for zoom lenses.
7. M ove lens ring to the physical engraving that you
want to add in as a new data point (with WRS
hand unit or manually with the motor attached).
8. C lick on the green '+' in the LDA browser scale
or hit the 'Enter' button on your keyboard to open
the active edit field.
9. E nter the current lens value, do NOT hit 'Enter' on
your keyboard afterwards.
10. M ove the lens ring to the next position to enter
the next data point.
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