User Manual

Gain/Gamma
Exposes or hides a simple pair of Gain and Gamma sliders that let you adjust the viewed image.
Especially useful for “gamma slamming” a composite to see how well it holds up with a variety
of gamma settings. Defaults to no change.
360º View
Sets the Fusion page viewer to properly display spherical imagery in a variety of formats,
selectable from this submenu. Disable toggles 360 viewing on or off, while Auto, LatLong, Vert
Cross, Horiz Cross, Vert Strip, and Horiz Strip let you properly display different formats of
360º video.
Locking the Viewer (Command-L)
You can lock a viewer to prevent it from updating. The node that’s loaded into that viewer still
processes and the new image is queued for display in the viewer, but until you unlock it, the
viewer does not update. By default, the viewer is unlocked.
Additional Viewer Options
There are additional commands when you right-click anywhere within a viewer and choose
from the generically named Options submenu.
Alpha Overlay
When you enable the alpha overlay, the viewer will show the alpha channel overlaid on top of
the color channels. This can be helpful when trying to see where one image stops and another
begins in a composite. This option is disabled by default.
Overlay Color
When you turn the alpha overlay on, the default color is to show white for the area the alpha
covers. There are times when white does not show clearly enough, depending on the colors in
the image. You can change the color by choosing a color from the list of Overlay Color options.
Follow Active
Enabling the Follow Active option will cause the viewer to always display the currently active
node in the Node Editor. This option is disabled by default, so you can view a different node
than what you control in the Control Panel.
Show Controls
When onscreen controls are not necessary or are getting in the way of evaluating the image,
you can temporarily hide them using the Show Controls option. This option is toggled using
Command-K.
Show Full Color Range
When working with floating-point images, you will occasionally need to visualize the values that
fall outside the normal luminance range. Enabling the Show Full Color Range option using the
toolbar button automatically normalize any image displayed in the viewer. Normalization causes
the brightest pixel in a color channel to be mapped to a value of 1.0 (white) and the darkest pixel
to be mapped to a value of 0.0 (black). Midrange values are scaled appropriately to fit within
that range. It is also useful when viewing Z-buffer or other auxiliary channels, which often use
value ranges far different from those in the color channels.
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