User Manual

Photoshop documents are pre-multiplied by nature, so you should always use the pre-
multiplied settings on the ATEM switcher when keying them.
Performing an Upstream Luma/Linear Key
Since luma and linear keys use the same parameters, they are set up on the software control
panel and broadcast panel using a common menu, called the luma key menu. What defines the
key as being either luma or linear is in the selection of fill and key sources. In a luma key, fill and
key sources are the same. For a linear key, fill and key sources are different.
The Upstream Key palette has a menu for resetting parameters at the top of each tab.
Selectthe sections you wish to reset from the menu.
Luma Key Settings
Select sections of the Palette you wish to reset from the reset menu
To set up a luma/linear key on upstream keyer 1 on the software control panel:
1 Expand the upstream key 1 M/E 1 palette and select luma tab.
2 Select the fill source and key source.
If performing a luma key, select the same source for both fill and key.
Adjust the key parameters to refine the key. For a description of luma key parameters, refer to
the table below.
157Operating your ATEM Switcher