Lighting is one of the most important details, yet often the last to come to mind when setting up a home office. Correctly done, natural illumination transforms the workability of a space and the on-screen appearance of a person. Inadequate lighting can lead to eye strain, stress, lack of visibility of presented materials, and lack of confidence in one's appearance. To maintain equality amongst video participants, all subjects on a conference call should be well lit, preferably with matching systems.
The best way to produce equitable meetings is to foster the illusion that we're sitting next to one another. Just a little knowledge goes a long way when it comes to improving video image with properly balanced camera and lighting. If we look more vibrant, not only will we feel more vibrant, but we'll appear more natural to other video callers. High-color rendering LED lighting is the best source to enhance both the accuracy of color and its saturation.
IT organizations supply employees with cameras, monitors, keyboards, mice, and a docking station, but no lights. If lighting is provided, the quality of the light and how the light and camera will work together is rarely considered. And there is no instruction on how and when to use it. The lighting/camera integration is paramount to achieving a professional on-screen image. Following simple level and color temperature adjustment and white balancing steps can make everyone wonder what you did to look positively cinematic on-screen.
Color Rendering Index (CRI) measures the ability of a light source to correctly reveal objects' colors, measured by comparison with a natural light source rated at 100%. Color temperature measures the color of light, existing on a scale between a lit match (1700 Kelvin) and a skylight (10,000 K). Color temperature conveys a feeling or mood and serves as a distinct tone that delivers information like what time of day it is. Lights that have a high CRI mimic the appearance of natural daylight, causing us to look more 'life-like' on screen. Light sources with a high CRI are best when you want to ensure that key human elements, such as skin tone and hair color are accurately reproduced. When a video call involves reviewing products, like clothing or furniture, color rendering is vital, and in applications like telemedicine, accurate color reproduction is critical.
Along with a high CRI video light, white balancing the camera image optimizes the video result. White balancing sets the reference for the camera based on how the eye perceives white, creating a reference point for all other colors. If you have ever been on the opposite side of a call with somebody with a white wall behind them, you can quickly see how off their complexion is. A white background makes it difficult for your camera to auto adjust correctly. To remediate this, you should spend a little time manually adjusting the camera's white balance. Ideally, a background wall that's not white and not blank will help your camera auto white balance correctly.
Cameras may be set to automatic or manual white balance. When time allows, manual white balance may provide a more nuanced result. As we white balance a camera, we instruct it to compensate with available light, so it renders an object white. The better the light provided to the camera, the less compensation it needs to do, saving that energy for video quality.
Feeling "near" can be especially compelling for telemedicine applications where color accuracy is vital to communicate and help diagnose patients. It is equally important for their patients to see their provider in good lighting to help relieve any anxiety and concerns they may have.
As the workforce and professional services, like concierge video medical care, continue to evolve towards remote realities, small investments in high-end camera and lighting systems will make large impacts on their collaborative effectiveness. And as the remote workforce grows, presenting your team with a superior and consistent video image translates to market advantage, and is fundamental to credibility for companies in the communication and collaboration sphere.
By Kathy Katz, Co-Founder, Brightline & Adam Berns, Senior Technical Alliances Manager, Logitech
