Image Browser hotkeys

Action	Windows and Linux	Mac OS X	Results
Brighten or darken HDR image	+ / - (plus or minus)	+ / - (plus or minus)	Increases or decreases the exposure level of an HDR image, making it appear lighter or darker
Reset HDR image	0	0	Resets the exposure level of an HDR image to the default exposure settings.
View discrete color channels for an image	1, 2, or 3	1, 2, or 3	Display the red, green, or blue color channels for the image respectively.
Zoom in and out on an image	Ctrl + (plus) or Ctrl - (minus)	Command + (plus) or Command - (minus)	Zoom in and out on an image.
Pan around an image	Alt + drag	Option + drag	Pan around your view of the image.
Next image	Spacebar	Spacebar	Displays the next image in the view.
Previous image	Backspace key	Backspace key	Displays the previous image in the view

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