Just as I start to think I understand color management my brain short circuits and I get confused. Have a new laptop on order, Dell XPS 15 with 4k UHD, Wide Gamut screen. I understand it will come with Dell's PremiereColor application which will set it to emulate several color spaces ... Full (also called 'Vibrant'), DCI-P3, Rec 709, Rec 601, and for photography, sRGB and aRGB. Will be using mainly Lightroom to process mainly Nikon NEF files. My question is which emulation to use ... should it conform to the software's working color space (ie, 'aRGB' when in LR's Library since it's using aRGB on its previews and 'Full' when in the develop module where it's ProPhoto) or should it conform to the target color space, ie sRGB for images destined for export to the web, aRGB for photos to be exported in that color space, and 'full' to evaluate photos destined to be printed? Or should I just set it to 'full', calibrate with my xRite, an fuggetabout switching?