Can I also use or convert a John USM or John Vitra on the table base? 18 March 2025 07:34 Updated Yes, this is possible. Please order a John foot and convert your John as shown. Related articles With the Magic Button, I can choose between three different lighting scenes in which the light becomes warmer when dimmed down. What colour temperature ranges are these and how can I set them? John - Control changeover (for John luminaires manufactured from 06.11.2024)