Latest articles by Bill Klages
'Droop'—The New Buzzword In Lighting Technology
We reach a saturation point where the output actually decreases as we increase the energy in the device.
Developing Standards In Lighting
NIST is involved in establishing accurate and stable standards for an enormous range of disciplines to aid U.S. commerce.
Lumens Per Dollar
No one wants to be labeled as unenlightened or not up-to-date on the latest trend.
Follow Spot Redux
Any of the typical mounting positions located in the "house" downstage of the proscenium are located quite a distance away.
Commemorating The PAR Can Fixture
Prior to this, it was common practice to boost the voltage on the 500 watt to get more light output.
What Shade of Green?
One of the main reasons that we are encouraged to accept LED fixtures is for power saving.
What Am I Missing?
The measure of the success in the development of the HDTV has always been how close it is to the image quality of motion picture film.
Illuminating ‘Illuminance’ Part 2
Measuring incident light is the usual means of determining exposure because of its simplicity.
The Stars Were Out... Again
Every four years we behold that ritual gathering of the tribes, the national political conventions. And every four years, a new generation of television makers discovers the “star filter.”
The Shadow Knows
Recently, I was browsing through some lighting manufacturer’s data sheets for a group of “TV Softlights.”
14 Stops… and Counting
Many video camera manufacturers, particularly those with large sensors intended for “film” acquisition, state that the dynamic range of their camera is 14 stops or 16,394:1, a very impressive ratio.
Calculations to Justify a Lighting Retrofit
Every broadcaster has moments when their thoughts turn to the merits of changing to solid-state lighting.
Shining a Light on Politics
The majority of the time in this column we are discussing good lighting. What about "bad" lighting?
Lighting: The Bad and the Good
As it turned out, finding decent lighting was not as straightforward as finding the flawed.
It's Lighting Convention Time
I expect the new season will bring a new fixture or device to open a wide door to new horizons.
Lighting a Set With Minimal Adjustment, Maintenance
The goal of the design was high picture quality with little or no adjustment necessary from setup to setup.
The Humble Fresnel
Most of the body of the lens can be removed to greatly lower the amount and subsequently the weight of the lens, but still retain the curved surfaces and their optical characteristics.
The Standard Eye and Other Inconsistencies
Just when we were feeling comfortable with the CIE photopic response curve of 1924, we discover that this standard has been completely incorrect for nearly ninety years.
Lighting and Visualization
Not only do we want to place the elements of our scene in a pleasing composition, we also want to control the visibility of each element.
'How Did They Get That Lighting Effect?'
Most lighting designers share an unconscious habit
