Re: ATSF reefer colors

Scott Kremer

In addition to the Kelvin rating there is also a CRI, Color Rendition Index, which gives you an idea of the accuracy of the color in question.  CRI’s for bulbs with a value of 90 or less will almost always result in a green cast to the light.  Today finding LED’s, bulbs not tubes,  with a CRI of 90 or higher is expensive.  In most cases a price of $14 to $18 per bulb for a 100 watt equivalent bulb.  That will change and there are some wattages and Kelvin temps with a price of less than $5 per bulb.  Still expensive.  I have not researched tubes but the same criteria applies.  Check out sources on the internet or, if you are lucky, check with your local lighting specialist store.

Scott Kremer

On Jul 2, 2022, at 1:54 PM, Todd Sullivan via <sullivant41@...> wrote:

Just to add to the discussion, with my last layout, I tried using stock fluorescent bulbs to illuminate the layout room, using twin tube fixtures.  The light emitted gave everything a greenish look.  Not what I was after!  So, I tried some daylight (5000K) bulbs, and everything looked blue and none of the warmer colors (like rusty stuff) showed well.  So, I bought some 3500K warm bulbs and tried them.  Only the warm colors showed well, and I lost all the blues and blacks.  So, I installed one 3500K bulb with a 5000K bulb in the same fixture, and voila!  Close to the full spectrum of colors.

I now live in Texas, and was concerned about adding heat to my layout room (which is on he second floor - no basements here), and I wanted to duplicate the same style of lighting without the heat-producing fluorescents.  I found some 33500K and 5000K strip LED lights on Amazon, but had to devise a way of installing the strips side-by-side on moldings attached to the ceiling.  They work well, but I wish they provided a bit more light.

So, that's another factor in how you choose to color things on your layout.  PS, I try to paint and weather all my structures and rolling stock under the same lighting conditions as the layout room.

Todd Sullivan

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