Alternatively, close the program at any time and your screen will immediately return to normal. If this causes problems at any time - maybe you're editing graphics and need to see colours as they really are - the effect can be disabled in a click or two, either entirely or for a defined period of time. If you'd prefer other applications to be able to take control, Gamma Polling can be disabled, and it's also possible to disable the effect when a full screen application is in the foreground. If that's too much, or too little, use the sliders to adjust the daytime and night time colour temperatures and hit Preview to see the change.Įlsewhere, a 'Gamma Polling' option refreshes the current gamma settings every five seconds, handy if another application tries to change them.

To get started, click the 'Preview 24-hour cycle' icon and watch as the program shows you how your display colour temperature will change over time. Right-clicking the LightBulb icon in your system tray and selecting 'Configure' displays some useful options and tools. Install the program and it goes to work automatically, detecting your location, figuring out the sunrise and sunset time and updating your display colour temperature accordingly. There are quite a few of these screen gamma utilities, but LighBulb's numerous settings, along with the 24-hour preview, let you know what to expect.LightBulb is a f.lux-like application which smoothly adjusts screen gamma to make colours seem warmer at night, reducing eye strain and making your PC more comfortable to use. You can disable internet synchronization, but you will need to set your sunrise and sunset times manually if you do.Īdvanced settings include gamma polling, temperature smoothing, pause when full screen, and the option to toggle LightBulb and gamma polling with most keys, not including letters. It picked up our location correctly but has options for geolocation. The arrow button is a 24-hour preview that shows how it will appear over 24 hours in around 15 seconds.

LightBulb sits in your system tray, and once opened, you can quickly set up and test various colors, temperatures, and duration. LightBulb continuously changes the screen gamma using temperature profiles, making the colors appear warmer at night or any way you like.

Download the new LightBulb 2.4.6