- Black Light 2.0 → $6.99 on michelf.ca Store or Mac App Store
- For OS X 10.6.6 and later. Released December 18, 2013.
Note: Black Light Screen Saver is now retiered as it can no longer run with OS X 10.9 Mavericks.
With Black Light you can apply a combination of visual effects to your screen by manipulating the gamma curve. Opening Black Light will automatically apply the selected effects. Quitting the application will restore the original settings.
You can toggle the selected effect combination by clicking on the Black Light icon in the dock, by using a global hotkey, or through the optional Black Light menu icon that can appear on the right side of the menu bar. (Note: this last option is only available with OS X 10.7 or later.)
- Invert Screen
- Reverse blacks and whites, giving you a negative of the image on your screen.
- Replace white grays with white to remove stripes, making white the background of most windows. Ligher colors might change hue slightly.
- HDTV Luminance Adjustment
- Adapt image for the 16–235 luminance range used by some high-definition television sets when connected by HDMI. Normally, your computer should be capable of automatically adusting output values accordingly, but this isn’t always possible when the TV is connected through an adapter.
- Dim Screen
- Reduce screen luminosity by dimming each pixel. Useful to reduce the luminosity of LCD screens beyond the minimal value of the back light.
- Color Filter
- Simulation of a color filter of a chosen color put in front of the screen.
OS X 10.6.6 Snow Leopard or later. Moving Black Light’s icon from the dock to the right side of the menu bar requires OS X 10.7 Lion or later.
For an earlier version of OS X (down to 10.2.8), use [Black Light 1.7.1][v1.7.1].
When another application has changed the gamma curve of the screen, or when some displays wake from sleep, the Black Light effect may disappear. This also happend with most of the screen savers. You may click again on Black Light’s icon to reactivate the effect immediately.
If the “Continously reapply effect” is checked in the preferences, the effect will be reapplied automatically after a few seconds. This is active by default.
The mouse pointer sometimes get the effect applied to it, but not always. This can vary depending on the video card of your computer and the way an application change the cursor on screen.
Black Light 2.0 (16 December 2013)
Can now set a global hotkey to toggle effect activation.
With OS X 10.7 or later, can now hide dock icon and have a Black Light menu item on the right side of the menu bar.
Fixed an issue where the color filter effect would not work properly on OS X 10.9 for some configurations.
Black Light 1.8.1 (September 18, 2013)
- Fixed a problem that would prevent Black Light from launching on OS X 10.6 and 10.7.
Black Light 1.8 (1 September 2013)
Sandboxed and now availabile on the Mac App Store.
There is a new option to disable Black Light’s effect when the screensaver is visible. This will work with most screensavers, but not with Black Light Screen Saver, ironically.
The Hide Stripes effect is now called Overexposure. I should have done this earlier, it’s been a long time since OS X harbored striped backgrounds.
Black Light 1.7.1 (6 June 2010)
- Can now choose to apply effect to only one screen using preferences.
Black Light 1.7 (5 October 2009)
Added HDTV luminance adjustment.
Added continous effect application for when the gamma curve is changed by an external source (such as another application or a display waking from sleep).
The screen saver is now working correctly with Mac OS 10.6 on a 64-bit Intel processor.
Black Light 1.6 (6 March 2006)
Improved the inversion algorithm to respect the gamma correction curve in use on the screen. Previously the gamma correction was inverted when the colors were, the correction was applied in reverse and could make gray levels appear coloured.
Added the color filter effect to the Black Light application.
Black Light and its screen saver are universal binaries that can work nativly on Mac OS X for the Intel processor.
Black Light 1.5
- Changed the name: “Black Light” instead of “BlackLight”
- Minor changes to the icon
- Two new effects supported:
- Aqua stripes hiding
- Dimming of the screen
- Added preferences to control effect activation
- Added a menu under the dock icon
- New effects for the screen saver, and slightly redone others
- Support for more than one monitor
- Added a screen saver module
- Invert screen with a single click on BlackLight’s icon in the dock