With the white balance set to daylight, tri-phosphor cool white lamps cause the entire image to have a bright yellow cast. It doesn't happen with normal cool white lamp though.

My normal digital camera doesn't see the difference between old cool white and 741/841s. 

Can anyone else duplicate it??

This phenomenon usually accurs in halophosphor fluorescent lamps operated on mains friquency. If the camera captures the image when the fluorescent lamp is in the zero current mode of the mains frequency and the shutter speed it high enough, all that you will get is the afterglow of the halophosphors which is yellow.

This phenomenon usually accurs in halophosphor fluorescent lamps operated on mains friquency. If the camera captures the image when the fluorescent lamp is in the zero current mode of the mains frequency and the shutter speed it high enough, all that you will get is the afterglow of the halophosphors which is yellow.

You read my message backward.  It turns yellow with triphosphor.


Neither sources were powered by line frequency. They were both powered by electronic ballast.