Understanding Video Camera Profile or Preset Adjustments and Settings (Part One)

The simplest explanation of the settings found on video cameras to control exposure and color information.

A Comparison of Light Fixture Output and Photometrics (Part One): Tungsten

To compare the photometric (light outputs) data of two fixtures is time consuming. Here’s a handy chart.

The Complete Guide to Lens Filters (Part One)

Everything you wanted to know about lens filters, in one place. Part One covers UV Filters and Polarizers.

A Comparison of 9 LED Fresnel Lights

A simple side-by-side comparison of LED Fresnel Light specifications. Who gives the best value for money, at least on paper?

The Ideal Viewfinder for Directors

Want to know how to find the ideal viewfinder for directors? This article gives you a simple guide to finding your ideal soul mate.

Notes by Dr. Optoglass: Color Bit Depth, Middle Grey and White Balance of the Human Eye

Topics Covered: Color Bit Depth Middle Grey Whiteness and White Balance Colors, like features, follow the changes of the emotions – Pablo Picasso We have already seen that the color space of the eye, as defined by the CIE 1931 XYZ color space, estimates about 10 million colors for our vision. The word size required […]

Notes by Dr. Optoglass: Dynamic Range of the Human Eye

Topics Covered: Contrast Ratio Static and Dynamic Range The Dynamic Range of the Human Eye Contrast Sensitivity By painting colors and lines and forms seen in quickened mood I was seeking to make this mood vibrate as a phonograph does – Edvard Munch The following image has two objects – can you see them? No? […]

Notes by Dr. Optoglass: Sensitivity and ISO of the Human Eye

Topics Covered: Sensitivity ISO The ISO Range of the Human Eye Photography to the amateur is recreation, to the professional it is work, and hard work too, no matter how pleasurable it my be – Edward Weston A camera sensor (or film) is like a sponge: It has the ability to soak in light. How […]