TurboPrint & PrintFab

Hi,
If I print a jpeg image from darktable (linux) this opens the TurboPrint 3 (studio edition) config 'card' and I can select the working colorspace. If I try to print the same image directly using TurboPrint composer the colorspace is listed as 'automatic selection' and I am unable to change it, or know what it is. It would be useful to be able to change it and additionally to know whether TurboPrint had correctly identified any color profile associated with the image

Hello phrrk,

when printing from an application, the entire print job is sent as a raster image, with the colours referring to a single colour space – this is the colour space that should be set in both the application and TurboPrint. Unfortunately, the print job itself does not contain any information about which colour space is being used.
When printing from Composer, all objects (images, PDF documents) normally provide information about the colour space in which they were created. TurboPrint can interpret the colours of all individual objects correctly, you do not need to specify a ‘general’ colour space for the print job.
To see which colour space is being used for an object, select it in the left-hand column and check what is displayed in the ‘Info’ field below it.