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Refashioned LED Fresnels: A Slightly Altered Take on a Familiar Moniker

Progress in illumination technologies has consistently brought along its own set of compromises

"Revisiting Well-Known LED Fresnels Under a New Light"
"Revisiting Well-Known LED Fresnels Under a New Light"

Refashioned LED Fresnels: A Slightly Altered Take on a Familiar Moniker

In the world of film and media, lighting plays a crucial role in creating visually striking images. However, recent shifts in lighting styles, as highlighted by some industry experts, have revealed that not all changes are for the better.

The transformation in lighting is a blend of creative intent and the introduction of new equipment. One such piece of equipment is the LED Fresnel, a modern counterpart to the traditional incandescent Fresnel.

The relative softness of a light source is directly proportional to the size of the light-emitting surface. This means that an LED Fresnel, with its smaller working surface area at flood, cannot 'wrap' the face quite the same way as a legacy Fresnel could. As a result, the shadows cast by LED Fresnels may lack the three-dimensional visual cues found in their incandescent counterparts.

The compact 'luminous capsule' of incandescent and HMI radiates light 360°, which is optically useful behind a Fresnel lens. On the other hand, LED emitters are both larger and more directional, making the light they produce less collimated and 'harder.'

Despite these challenges, innovative companies are working to improve LED Fresnels. While the company developing an enhanced version that addresses these issues is not explicitly named, ARRI, known for its advanced lighting and camera technology innovations, may be one of them.

Clever R&D is improving LED Fresnels with the use of secondary optics and by redesigning the lenses. This is a promising development, as it could help bridge the gap between the pliable, flattering light of incandescent Fresnels and their LED counterparts.

In the meantime, other lighting solutions like 'Profile' spotlights may be a better choice, particularly when working at distances greater than 12 feet. This is because shutter cuts hold up over distance, whereas tight Fresnel barndoor cuts lose beam edge cohesion over longer distances.

The design process has also been affected by the advent of Lighting CAD, which has changed the way designs are created without altering the intent.

It's important to note that 'Hard light' is essential in maintaining interesting images, as it creates highlights and shadows. In video studios, this type of light is traditionally referred to as Fresnel.

When an LED Fresnel is at full flood, the light only engages the very center rings and bull's eye of the lens. In contrast, an incandescent lamp covers the entire Fresnel lens, collimating the light into a larger, organized beam that's malleable.

The author, in particular, has stopped using plastic lighting templates and has noticed the lack of shadows in current lighting. However, he continues to explore and adapt to these changes, as the world of lighting evolves.

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