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You must use a viewing booth and bulb that is manufactured by GTI or JUST Normlicht. Although untested, LED lamps from these manufacturers should be able to work with Matchprint Virtual / PressProof as long as they conform to the ISO 3664: 2009 standard.
The ideal scenario for setup of LED lighting in the booth is to have the booth manufacturer (GTI or J-N) tune the LED's in the booth to your lighting standard (GTI or J-N). This allows the new LED light booths to just drop in to your existing color workflows.
Note: If you use a viewing booth produced by another manufacturer, color misalignment between hard copy proofs and virtual proofs may occur.
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