If I open any of the linearization target image files with Photoshop (to add a black canvas around) it warns me that the file has no embedded profile and asks me whether I want to leave it like this or add a Grey Gamma 2.2 (I select to leave it without profile). Indeed if I add the file to Print Tool under Embedded Profile I see it doesn’t have an embedded profile (while the screenshots in the Piezography manual show “Generic Gray Gamma”).
Is this correct?