I wanted to replace a 11W halogen bulb from IKEA. The stands in our otherwise dark hallway and actually has to burn throughout the day. However, it makes a very bad light sebson, bit like a standard fluorescent tube. How one can write as 2700K color temperature it is completely unclear to me. When I at f.lux - a Dämmerlichtprogramm for Mac - Enter H 2700K, then I look at a red screen. Go back. If jmd a