The Series
The other posts in the Studio Lighting series:
Studio Lighting – Part I – Requirements & Why I went with Fluorescent
Studio Lighting – Part III – coming soon
Studio Lighting – Part IV – coming soon
Today’s post is a discussion of the installation of the indirect fluorescent lights I selected for whole studio lighting and how they are performing.
The Fixtures
The fixtures I ordered (link to lights on the manufacturer’s website) had to be manufactured and it was an exciting day when the finally arrived at the studio. There are seven 8 foot long fixtures and one 4 foot long fixture (which was not installed) in this pile:

This is what the fixtures looked like before they were installed (the gold stuff is just plastic protecting the very shiny silver surface that helps reflect the light):

Installation
For those that followed my blog and construction photo journal know that the installation of these lights was not a smooth process.
They had to be sent back to the manufacturer after the first failed installation attempt to be rewired. Then I had to remove one of the lights cause it turned out they didn’t fit (due to end caps that they sort of forgot to tell me out). There were some cancellations by the electricians, a sketchy incident with them being locked out of the house but after 6 or 7 scheduled appointments they were finally installed.
During that time the lights sat piled up in my studio collecting dust:

Finally the electrician and Carl (the guy in charge of my project) got the lights installed. The lights are bolted together into long runs and then suspended from the ceiling on wires. It was a bit of a tricky job but they did an excellent job of hanging them straight:

Installed
This is what they look like installed – the light is bounced off the ceiling and throughout the entire room. I have them just a foot off the ceiling because I don’t want them to block the design walls so quite a bit of light pools on the ceiling. They would probably look a bit better hanging at 18″ down but for my application this is how I want them.

There are 3 runs of lights running the length of the studio, which is 27 feet long and 20 feet wide. Two of the runs are 16 feet long and the third is 24 ft long. The shorter runs are because I don’t need to light up the stairway area (floor plan).
Because energy efficiency was a concern I have the lights on 4 switches. The shorter runs each have their own switch and the longer run is broken into 2 switches. This way I can turn on only a few lights if I’m doing work in just one area of my studio.
How They Perform
I didn’t get to see these things in person so I had to guess how many runs of lights I would need. I went with 3 and it seems to be about perfect – one down the center and 2 closer to the walls. The runs are about 7 feet apart.
Each 4 foot section of light holds 3 T5 bulbs so with seven 8 foot fixtures that is 42 bulbs.
This seems to be about perfect. I have even light throughout the studio without any areas that feel to dark or too light.
The color of the light (5500K with a CRI of 91 – see part I for more info on the bulbs) is perfect for my needs. I can do color work day and night without a problem and it’s a really good light for photographing my artwork.
Basically these lights turned out to be exactly what I wanted. There was a lot of guess work involved but in the end it worked out well. If I built another studio I would install the same lights in pretty much the same configuration.
The Cost
Several people have asked so figured I might as well just include this in the post. These lights aren’t cheap. I got the contractor’s discount on these fixtures and they were still $450 a piece, with tax it came to about $3500 for the fixtures. The bulbs were another $600 (I order 2 cases of 25 at $11.50 per bulb, plus shipping).
My artwork and I are so totally worth this investment.