The texture size entered here will define the texture size for all textures created while working with Projection Man. The size can also be changed in the course of working with Projection Man, if desired.
Use this setting to define which channels should be activated when new textures are generated within Projection Man.
When matte painting the objects to be painted are normally painted in a WYSIWYG mode, i.e., the final object appears just as it was painted (not taking changes caused by lighting, etc. into account). In Cinema 4D, this is achieved using the Luminance channel. This is why the default setting is Luminance, Alpha. If necessary, you can switch to the Color, Alpha setting.
Enter the path to your Photoshop application here so Cinema 4D can open generated textures directly in Photoshop.
If your scene has not yet been saved and Projection Man is open, the path in this field will reflect the path to which the scene is saved once it is saved. The same applies when textures are generated or opened.