User Manual

Camera Controls 109
User Pixel Masking works in combination with the ARRIRAW Converter (ARC) from
ARC version 3.0 on.
To use User Pixel Masking for all Output and Recording Formats:
1. Record a short ARRIRAW sequence at 24 fps OR capture an ARRIRAW frame
grab.
2. Import the ARRIRAW sequence or frame grab into the ARC.
3. Use the ARC software to mark defect pixels. The marked pixel coordinates are
stored in an XML file called the User Pixel Mask. Please note that it is advisable
to mark the least number of pixels necessary, as too many marked pixels can be
counter productive.
4. Save the User Pixel Mask into the folder /ARRI/ALEXA/Sensor/ on the SD card
and load it into the camera via the SD card.
5. After a restart of the camera, the marked pixels will be masked using information
from surrounding pixels. This masking happens right after the sensor, and thus
applies to all outputs: the electronic viewfinder, MON OUT, and frame grab outputs
as well as ARRIRAW and ProRes recordings.
6. Carefully check the end result by visually inspecting the areas where you have
marked pixels; if too many pixels are marked too close to each other, or if pixels
are marked close to other pixels that are already marked in the static pixel mask,
the result could be uncorrectable clusters, which are more visible than the original
defect pixels.
As an added service, it is possible to send the User Pixel Mask to ARRI Service at
[e-mail] for verification. We strongly recommend to take advantage of this free
service, as sometimes, depending on the background, clusters are difficult to spot.
Please note, however, that in the end it is the responsibility of the person creating the
User Pixel Mask to verify that no clusters are formed.
NOTICE
•
When shooting ARRIRAW, it is not necessary to load the User Pixel Mask into
the camera. Instead, it can be applied to the ARRIRAW files in post using the
ARRIRAW converter software or any third party software that has implemented
the User Pixel Mask feature through the ARRIRAW SDK.
•
The User Pixel Mask will remain intact during a factory reset and during a
software update. It can be manually removed or overwritten with a new one at
any time.
User Pixel Mask active Shows whether a User Pixel Mask is currently
active in the camera.
User Pixel Mask installed Shows whether a User Pixel Mask is currently
installed in the camera.
Install User Pixel Mask Select to install a User Pixel Mask from the SD
card.
Backup User Pixel Mask Select to backup the currently installed User
Pixel Mask onto SD card. It will be automatical-
ly named UserPixelMask_CAMSERIAL_Back-
up_ YEARMONTHDAY_HOURMINUTESE-
COND
Uninstall User Pixel Mask Select to uninstall a User Pixel Mask.