Originally posted by dandy467d:
As with any flourescent or hid lamp, let them run for a few hours they will even out.
Most of the time that's true. Not always though. We recently completed a historical renovation of a county courthouse. As part of the renovation the flourescent lighting was demo'd and hid wall washers were installed. All of the 250w metal halide lamps were from the same manufacturer and the same type. The color differences were huge! Most were a nice white light....but many, probably %10-%15, were yellow. Very noticeable when they were mixed in the same room.
We rearranged the lamps so that the rooms were color matched then replaced the ones that we could not get to come out even.
All in all, a major hassle. Quality of materials seems to worse and worse as time goes on.....the obvious result when the job always goes to the low bid. Means we have to use low bid materials or not get the job.
