2015625 — Let me go over the four common methods for creating artificial light along with the basic physics that makes them work.

A good example to illustrate the difference between hard and soft shadows: Through a very narrow opening of curtains, daylight is falling into this hotel room. Horizontally, the opening is only a few centimeters wide – the corresponding shadows are very hard. The vertical shadows, however, are very soft because the curtains let some light in from the ceiling to the floor. In the studio, this effect can be simulated with a Striplite 60, a litestick and with narrow softboxes like the 30x120 or the 30x180 cm softbox, especially when these are equipped with the additional strip mask.

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Jan. 24, 2024 - Smart Vision Lights (SVL), a global leader in the design and manufacture of innovative LED illumination solutions, introduces the RHI200-DO Lightgistics series light, which features 64 LEDs in a 205 mm x 205 mm ring light for intense uniform lighting at long working distances of up to 2000 mm. Equipped with Hidden Strobe technology, the light delivers all the advantages of strobing without the disturbance and disorientation often linked to LED strobe lights. Hidden Strobe technology allows LEDs to automatically trigger thousands of times per second, pulsating at speeds imperceptible to the human eye and generating the appearance of uninterrupted illumination. The innovative technology helps maximize the abilities of machine vision systems while safeguarding employees from the disorienting effects commonly associated with flashing lights. “Today’s high-speed machine vision systems use LEDs that frequently pulse to capture images of rapidly moving objects, but this strobing effect can generate unpleasant and potentially hazardous work environment conditions,” according to Steve Kinney, director of training, compliance and technical solutions at Smart Vision Lights. “The RHI200-DO minimizes these drawbacks by utilizing Hidden Strobe technology, which enables high-speed machine vision systems to leverage the power of strobed LEDs without inadvertently creating safety risks or requiring shielding.” Boost logistics operations through lighting  Lightgistics lights specifically address the challenges of accurate high-speed barcode reading and optical character recognition (OCR) on highly reflective plastic wraps and shipping bags. Dual OverDrive technology utilizes SVL’s new Deca OverDrive and standard OverDrive engines, which together allow end users to easily attach polarizers that maximize light output in high-speed conveyor systems. “Logistics and warehousing businesses today cannot afford to sacrifice speed and throughput, which means any machine vision system deployed on the floor must be capable of accurate code reading, even when reading through plastic,” said Kinney. “Lightgistics LEDs help improve logistics operations by delivering lighting that is 10 times brighter than standard continuous mode, which helps improve track-and-trace while maintaining the speeds needed for today.” The RHI200-DO is an OverDrive–only light source with a high-intensity ring light. Its integrated camera mount fits most common machine vision cameras and can be directly connected and controlled through a camera’s trigger output. The RHI200-DO’s onboard charging capacitors ensure powerful bursts of energy while maintaining a low consistent electrical draw. The IP65-rated bright field operates at working distances between 500 mm and 2000 mm with 10-, 14- and 30-degree lens options.

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In darkness, it opens to admit as much light as possible. The iris reacts ... The cornea-lens re-focuses light scattered from that spot into a nearly ...

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What are the three basic categories of light? Looking at the hardness (or softness) of light is certainly the most simple and easy way to classify it. However, we can never call a certain light shaper hard or soft (with the exception of a point light source that is always hard). Depending on the size and the distance between the object and the light, the same light shaper can once be hard, soft or even diffused. Let’s have a closer look at these three categories:

Lightgistics lights specifically address the challenges of accurate high-speed barcode reading and optical character recognition (OCR) on highly reflective plastic wraps and shipping bags. Dual OverDrive technology utilizes SVL’s new Deca OverDrive and standard OverDrive engines, which together allow end users to easily attach polarizers that maximize light output in high-speed conveyor systems. “Logistics and warehousing businesses today cannot afford to sacrifice speed and throughput, which means any machine vision system deployed on the floor must be capable of accurate code reading, even when reading through plastic,” said Kinney. “Lightgistics LEDs help improve logistics operations by delivering lighting that is 10 times brighter than standard continuous mode, which helps improve track-and-trace while maintaining the speeds needed for today.” The RHI200-DO is an OverDrive–only light source with a high-intensity ring light. Its integrated camera mount fits most common machine vision cameras and can be directly connected and controlled through a camera’s trigger output. The RHI200-DO’s onboard charging capacitors ensure powerful bursts of energy while maintaining a low consistent electrical draw. The IP65-rated bright field operates at working distances between 500 mm and 2000 mm with 10-, 14- and 30-degree lens options.

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Looking at the light of a point light source, we will see very clearly defined shadows. On a background or underground there is either light or shadow, but nothing in between, no gradations. Even the finest details provoke a clear shadow. The structure of any object (e.g., textile, skin) is pointed out very clearly. A very hard light source is the only one that does not change its characteristics if we vary the distance to the object (but according to the inverse square law it does change the power). The shadows remain the same: very sharp. Hard lights may increase the contrast of the object. The areas directly lit may be burnt while the shadows remain very dark.The hardness of the light finally has an influence on the color saturation. Small and hard lights increase the saturation of the picture while soft, and especially diffused lights reduce it.

The light does not show any direction anymore and the only contrast remaining in the photograph is the contrast of the object itself. The structure of the object’s surface is as flat as possible, almost invisible and the color saturation is heavily reduced.The following light shapers can be used as diffused lights:

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What is backlighting? ... Backlighting is based on LED lighting that, when reflected on surfaces such as the wall, floor, or ceiling, makes our perception see a ...

8 — 5.3M posts. Discover videos related to Conair Led Vanity Makeup Mirror Target on TikTok. See more videos about Conair Led Compact Magnetic ...

Average soft light sources have about the same sizes as the objects or set-ups they illuminate: Let’s say a 50 by 50 cm softbox for a narrow-cropped portrait or an 80 by 140cm softbox for a full-body shot. The shadows on the under- and backgrounds are still clearly visible, even when they are not sharply defined anymore. Big parts of these shadows show gradations, and a small core shadows still exist. Small and fine details, however, do not appear in the shadow. The texture of our object is now shown in lower contrast and is therefore not as clear as in hard light. Soft light still increases the contrast of the object a little, but less than a hard one. The color saturation finally is somewhere in between the one derived from a hard light (high) and a diffused light (low). Being soft, our light source got a certain size (it is not a point anymore) and the distance from it becomes very important: The closer we get, the bigger the light source becomes (seen from the perspective of the object or model). This means that our light becomes softer when we get closer, and harder, when we use it over larger distances. A light of about 100 by 100cm placed at 4 meters from the model has the same hardness as a source of half the size (50 by 50 cm) at half the distance (2 meters). Due to the inverse square law, we expect other effects (higher contrast when placing the light closer to the object or model). When we bring the 100 by 100 cm softbox to half the distance (we will have to reduce the power by about 2 f-stops) the light will be a lot softer.The following light shapers can be used as soft lights:

2024423 — A back-lit display places its backlight LEDs in the back of ... A back-lit display offers more uniform brightness and contrast than an edge ...

r/photography icon. r/photography. • 2 mo. ago · How can I improve my lighting setup for portrait photography without expensive equipment? 28 ...

Oct 31, 2019 — a light meter is a device that measures light. There are two different kinds of light meters—incident and reflective. An incident light meter ...

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Jan. 24, 2024 - Smart Vision Lights (SVL), a global leader in the design and manufacture of innovative LED illumination solutions, introduces the RHI200-DO Lightgistics series light, which features 64 LEDs in a 205 mm x 205 mm ring light for intense uniform lighting at long working distances of up to 2000 mm. Equipped with Hidden Strobe technology, the light delivers all the advantages of strobing without the disturbance and disorientation often linked to LED strobe lights. Hidden Strobe technology allows LEDs to automatically trigger thousands of times per second, pulsating at speeds imperceptible to the human eye and generating the appearance of uninterrupted illumination. The innovative technology helps maximize the abilities of machine vision systems while safeguarding employees from the disorienting effects commonly associated with flashing lights. “Today’s high-speed machine vision systems use LEDs that frequently pulse to capture images of rapidly moving objects, but this strobing effect can generate unpleasant and potentially hazardous work environment conditions,” according to Steve Kinney, director of training, compliance and technical solutions at Smart Vision Lights. “The RHI200-DO minimizes these drawbacks by utilizing Hidden Strobe technology, which enables high-speed machine vision systems to leverage the power of strobed LEDs without inadvertently creating safety risks or requiring shielding.”

Now the light source is huge. Shadows no longer exist as the light is big enough to shine all around the object or model.