Nebulb internally works with the images in the color space of the camera and at 32-bit, to ensure that the image always maintains the original quality. Thanks to this it is possible, among other things, to apply all the adjustments you want without any degradation of the image quality (non-destructive adjustments).
However, there are two moments when it is absolutely necessary to convert the color space of the image:
- When displaying the image on the screen.
- When exporting the image to a disk file.
Display of the image on the screen
In order for the images to be displayed on the screen with the "correct" colors, Nebulb uses the color profile assigned to the monitor where the program is open. In this way, Nebulb automatically obtains the color profile that the monitor is using and converts the image so that its colors are displayed correctly on that monitor.
Likewise, in case you have a calibrated monitor, Nebulb also uses the color profile of the calibration, thus ensuring that the image in Nebulb is represented according to the calibration of your monitor.
IMPORTANT: Color perception depends entirely on the screen and its calibration, so the same image may look completely different on different devices. What Nebulb's color management allows is that you can see the images in Nebulb the same as if you open them in any other software on your computer that also manages color.
Exporting the image to disk
Just as the color management that Nebulb does when displaying the image on the screen is automatic, when you want to export the image to disk you must select yourself the color space in which you want the image to be saved (depending on the use you are going to give to it). To do this, in Nebulb you have a drop-down list with different options:

As you can see in the image above, Nebulb allows you to export the image in the following color spaces:
- sRGB: This is the most standard color space and the one mostly used by screens of all kinds (that's why it is the most commonly used, although it is a much smaller space than the next two). It is the ideal color space for publishing images on the Internet, although it is far from being recommended if you want to further process the image in other software or print it (although printing would be the subject of a separate chapter).
- Adobe RGB (1998): It is a much wider color space than sRGB (more colors fit) and it is also very widespread (many cameras and monitors work directly in this color space). Therefore, it is the default option selected by Nebulb, since it allows you to continue processing the image in other software (without the risk of color clipping).
- ProPhoto RGB: This is the widest color space (much wider than the previous two), so it is ideal if you are going to continue processing the image intensively in other software.
- Display: It is the color space used by your monitor to represent the images on the screen. It is not a color space that is very useful, but it can be interesting to use it if you want to represent the exported image in other software that does not do color management (so you will see it there the same as in Nebulb or in any other software that does manage color).