Read Node and Colorspace in Nuke

Nuke reads images from their native format, but the Read node outputs the result using a linear colour space. If necessary, you can change the Colourspace option in the Read node’s properties panel, or insert a Color > Colorspace node to select the colour scheme you want to output or calculate.
QuickTime .mov files may appear different in Nuke relative to Apple’s Final Cut Pro, because Final Cut Pro introduces a gamma compensation based on assumptions about the content of the files and the viewing environment.

If you are using 64-bit Windows, you cannot read QuickTime files into Nuke. This is because Apple has not released QuickTime for 64-bit Windows.

The file names of image sequences generally end in a number before the extension, for example image0001.rgb, image0002.rgb, image0003.rgb, and so on. When browsing for files like this, you may notice that the sequence appears as image%04d.rgb. Here, %04d is Nuke’s way of indicating that the number is in a 4-digit incremental format. For a 3-digit format, such as image001.rgb, the frame number variable would be %03d. Nuke’s File Browser also understands unpadded file names, such as image1.rgb, image2.rgb, image3.rgb, and so on. They appear as image%d.rgb.

You can also use #### instead of %04d, ### instead of %03d, ## instead of %02d, and so on.