
Photomatix Pro User Manual Page
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2.2.1 General controls
The image adjustment controls are specific to the tone mapping method activated and are
described in the next subsection. The Tone Mapping Settings and Preview dialogs include
additional general controls, which apply to both tone mapping methods.
Preview size
The radio button across the top of the Preview dialog let you choose between two or three sizes
for the preview, related to the size of the original. For instance, “1/4” means that the size of the
preview is one fourth the size of the original HDR image. The “Preview Magnification” control
allows you to scale the selected size upwards by the given percentage (up to 175% when you
use click on the arrows, and up to 199% when you type the value in).
Show Original / Show Preview
“Show Original” lets you quickly toggle back and forth between a preview of the tone mapped
image (the default) and the original, non-tone mapped image (“Show Original”). Use this to
compare the effects of your changes with the original.
Floating Histogram
The tone mapping Histogram is a floating window that contains four selectable tabs to improve
your analysis of the image: Luminance, Red, Green, and Blue. In addition, if you move your
mouse back and forth across the histogram, Level, Count, and Percentile information are
provided. If the histogram is turned off, enable it by selecting “8-bit Histogram...” from the “View”
menu.
Loupe
When you move the mouse over the preview, you will see a square marquee. If you click on
some position, the content of that square will show up at 100% resolution in the “Loupe” panel.
You can use the option “Refresh Loupe only” to avoid refreshing the main preview when you
change settings. This will speed up the view refresh inside the Loupe window.
Reset, Undo & Redo
At the bottom of the Tone Mapping Settings dialog, the “Undo”
(arrow to the left) and “Redo” (arrow to the right) buttons let you
undo and redo changes you made to the settings.
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