Security Magazine logo
  • Sign In
  • Create Account
  • Sign Out
  • My Account
  • NEWS
  • MANAGEMENT
  • PHYSICAL
  • CYBER
  • BLOG
  • COLUMNS
  • EXCLUSIVES
  • SECTORS
  • EVENTS
  • MEDIA
  • MORE
  • EMAG
  • SIGN UP!
cart
facebook twitter linkedin youtube
  • NEWS
  • Security Newswire
  • Technologies & Solutions
  • MANAGEMENT
  • Leadership Management
  • Enterprise Services
  • Security Education & Training
  • Logical Security
  • Security & Business Resilience
  • Profiles in Excellence
  • PHYSICAL
  • Access Management
  • Fire & Life Safety
  • Identity Management
  • Physical Security
  • Video Surveillance
  • Case Studies (Physical)
  • CYBER
  • Cybersecurity News
  • More
  • COLUMNS
  • Cyber Tactics
  • Leadership & Management
  • Security Talk
  • Career Intelligence
  • Leader to Leader
  • Cybersecurity Education & Training
  • EXCLUSIVES
  • Annual Guarding Report
  • Most Influential People in Security
  • The Security Benchmark Report
  • Top Guard and Security Officer Companies
  • Top Cybersecurity Leaders
  • Women in Security
  • SECTORS
  • Arenas / Stadiums / Leagues / Entertainment
  • Banking/Finance/Insurance
  • Construction, Real Estate, Property Management
  • Education: K-12
  • Education: University
  • Government: Federal, State and Local
  • Hospitality & Casinos
  • Hospitals & Medical Centers
  • Infrastructure:Electric,Gas & Water
  • Ports: Sea, Land, & Air
  • Retail/Restaurants/Convenience
  • Transportation/Logistics/Supply Chain/Distribution/ Warehousing
  • EVENTS
  • Industry Events
  • Webinars
  • Solutions by Sector
  • Security 500 Conference
  • MEDIA
  • Videos
  • Podcasts
  • Polls
  • Photo Galleries
  • Videos
  • Cybersecurity & Geopolitical Discussion
  • Ask Me Anything (AMA) Series
  • MORE
  • Call for Entries
  • Classifieds & Job Listings
  • Continuing Education
  • Newsletter
  • Sponsor Insights
  • Store
  • White Papers
  • EMAG
  • eMagazine
  • This Month's Content
  • Advertise
Security Magazine logo
search
cart
facebook twitter linkedin youtube
  • Sign In
  • Create Account
  • Sign Out
  • My Account
Security Magazine logo
  • NEWS
    • Security Newswire
    • Technologies & Solutions
  • MANAGEMENT
    • Leadership Management
    • Enterprise Services
    • Security Education & Training
    • Logical Security
    • Security & Business Resilience
    • Profiles in Excellence
  • PHYSICAL
    • Access Management
    • Fire & Life Safety
    • Identity Management
    • Physical Security
    • Video Surveillance
    • Case Studies (Physical)
  • CYBER
    • Cybersecurity News
    • More
  • BLOG
  • COLUMNS
    • Cyber Tactics
    • Leadership & Management
    • Security Talk
    • Career Intelligence
    • Leader to Leader
    • Cybersecurity Education & Training
  • EXCLUSIVES
    • Annual Guarding Report
    • Most Influential People in Security
    • The Security Benchmark Report
    • Top Guard and Security Officer Companies
    • Top Cybersecurity Leaders
    • Women in Security
  • SECTORS
    • Arenas / Stadiums / Leagues / Entertainment
    • Banking/Finance/Insurance
    • Construction, Real Estate, Property Management
    • Education: K-12
    • Education: University
    • Government: Federal, State and Local
    • Hospitality & Casinos
    • Hospitals & Medical Centers
    • Infrastructure:Electric,Gas & Water
    • Ports: Sea, Land, & Air
    • Retail/Restaurants/Convenience
    • Transportation/Logistics/Supply Chain/Distribution/ Warehousing
  • EVENTS
    • Industry Events
    • Webinars
    • Solutions by Sector
    • Security 500 Conference
  • MEDIA
    • Videos
      • Cybersecurity & Geopolitical Discussion
      • Ask Me Anything (AMA) Series
    • Podcasts
    • Polls
    • Photo Galleries
  • MORE
    • Call for Entries
    • Classifieds & Job Listings
    • Continuing Education
    • Newsletter
    • Sponsor Insights
    • Store
    • White Papers
  • EMAG
    • eMagazine
    • This Month's Content
    • Advertise
  • SIGN UP!
Video Surveillance

Day, Night, Round the Clock

By Sue Marquette Poremba
Day/Light feature
March 1, 2011
Day/Light in body

Since thermal cameras are based on heat sensors, a human body shows up clearly, even at a distance.

In the Norton Healthcare System in Louisville, Ky., there are behavioral patients who need round-the-clock monitoring. To do so, explains Stanley Helm, security director, the rooms are equipped with security cameras. But the cameras used for years required plenty of background light in order to get clear pictures, and that meant the lights were always turned on, even when the patients were trying to sleep. 

At the suggestion of a colleague, Helm decided to try day/night cameras in patient rooms in Norton’s five large hospitals. “The cameras give our patients better privacy,” Helm says. “With the day/night cameras, we can turn the lights down. The patients are less agitated.”

Day/night cameras first came on the market about ten years ago, with the goal of providing the desired color video available in well-lit situations, as well as a clear video in low-light situations, with one camera. In the past, the only option was monochrome cameras, which then evolved into color cameras before being combined into a day/night option and a 24-hour surveillance option. 

Today’s day/night cameras come in a variety of options. The first decision to make is between an analog camera and network camera. Then, day/night cameras are available in standard definition and in high definition, and which option to choose will depend on the application of the camera – where is the camera placed, what type of image is the camera supposed to capture? High definition may not be the best option if the camera is going to be most heavily used in low light conditions because the sensors do not have the capabilities for those conditions right now.

Most day/night cameras are set up to toggle between color during daylight hours or in bright light and to high-resolution black and white images in low light situations. Mike Kuhn, vice president of Convergint Technologies, admits that while most people prefer to have color images to be able to tell if an intruder is wearing a blue or a red sweatshirt, for example, in most cases, the black and white images actually provide a sharper picture. He recommends that in certain situations, like in schools, it is better to set the camera to switch to the “night” image in a higher light. Color can still create a grainy image, he says, and the security director needs to decide which is more important – color or clarity.

What makes day/night cameras different from other options is the infrared (IR) cut filter. The filter expands the amount of light the sensor can receive. All cameras (even standard digital consumer cameras) filter out infrared light for daytime photos since near infrared light makes it very difficult to color correct an image, explains Ian Johnston, CTO with IQinVision. At night, there are many natural sources of IR light – the moon, stars, etc. – so using all the available light makes a lot of sense. Also, since there isn’t a lot of color information at night, the cameras will typically drop to black and white, which removes the need to correctly color correct the image.

The lenses have to be specifically chosen if they’re going to be used with IR light. Appropriate lenses are known as “IR corrected.” This is important due to the fact that a standard (non IR corrected) lens focus point for the IR light is different than the focus point for visible light. What that means is if the camera is focused at night, it will be out of focus during the day and vice versa. With an IR corrected lens, the two focus points are the same, so the camera will produce sharp images both during the day and at night. The IR corrected lenses are more expensive and usually higher quality lenses, which, of course, factors into the overall camera price.

IR illuminators are often used to extend the amount of light available to the camera, without having the entire scene be really bright to the eye. Sometimes they’re used for covert purposes where you don’t want to advertise the fact that you have a camera, but most often they’re used so they can see in dim lighting conditions, without annoying anyone that may be in view of the scene. 

IR illuminators, however, are tricky to work with, especially outdoors. Like a flashlight, either the field of view that is illuminated is restricted, or an extremely bright IR illuminator is necessary to light up a wide field of view.

When your team is setting up the cameras, it’s important to realize that no scene is ever constant. The lighting will change throughout the day as the sun moves, so the installation needs to consider the different light patterns. Also, the lens should be properly focused so the image remains clear when it toggles between day and night. During the day and the camera is in the color mode, that picture will likely be good enough and could be enhanced if needed. However, that might not be the case when it toggles to black and white. Therefore it’s best to physically align the cameras during nighttime mode to get the best picture quality. 

 

Technical and Customer Perception

Challenges in choosing and installing day/night cameras can be broken into two areas: technical challenges and customer perception or expectations.

Technical challenges include sensors, pixels and lenses. Really small sensors with sub two micron pixel elements just aren’t that good at capturing a ton of light.

The only way to get more light into the pixel is by leaving the shutter open longer. However, just like with a ‘point and shoot’ camera, any movement while taking the picture results in motion blur. In order to have a sharp picture, shutter speed should be around 1/30th of a second. For day/night cameras in the low light mode, the sensors may drop down to 1/5th or even ½ second or longer to allow them to gather more light. That long of an exposure will create a ‘ghostly’ image that is completely unrecognizable.

Lenses for security cameras have also been affected by the current trends in photography. Due to cost reductions and cameras becoming more compact, today’s lenses are pretty small and don’t gather much light. Good image quality stems from having a good lens. The lens is the most neglected part of the solution. It is also the easiest cost to reduce. 

As for challenges surrounding perception, TV, movies and other media have skewed expectations. Ask someone about a day/night imaging, and the expectation is a solution using the same technology used by the military where you can literally see in the dark, or near zero light conditions. That technology is available, but not in the price range most organizations want to spend on camera security systems. For most situations, it’s important to have good night images, no motion blurs and spend a few hundred dollars.  It’s possible to meet two of those specs, but rarely all three, simply because the system many people would like to have doesn’t fit into the budget.

Ron Aguiar, director of safety and security at Southeast Christian Church in Louisville, Ky., needed to address these issues as planned the security network for his facility. The property sees activity from 5:00 am to midnight most days, and Aguiar needed cameras that could record night activities. He began installing the cameras when the church moved to the property twelve years ago and continues to add cameras to the system. As the technology developed, he decided that day/night cameras were his best option.

“We add a few cameras every year to better our security plan, and when we do, the new cameras are always better than the previous year’s cameras,” Aguiar says.

His security concerns include 50 acres of parking lots and more than one million square feet of indoor space. The cameras are placed in areas where there is a lot of people movement, including entrances, the sanctuary, and the rooms where the children services are held.  When he began replacing cameras with day/night systems, Aguiar found he didn’t have to relocate the vast majority of the cameras because of the improved technology to react to light and darkness. He does note that the day/night technology allowed him to add cameras in new locations inside the building, in areas where he didn’t have cameras in the past.

With the volume of cameras used on the property, cost is a concern for Aguiar; however, the improved technology has made day/night cameras more easily affordable. 

 

Choosing Thermal

Day/night cameras that use IR illumination and IR sensors are an improvement over options that were available in the past, particularly in areas where there is a need for 24-hour surveillance. But IR illumination isn’t the only option on the market. Thermal cameras also provide high-quality day/night images, but by using a different technique.

Thermal cameras sense energy in a longer wavelength of light than other camera types, according to Andy Teich of Flir. The images the thermal cameras create are generated from heat instead of light. Because of that, the images the cameras project are very different from light-based cameras. There is no color option. Instead, the images are in black and white with figures having a ghost-like quality to them. While the resolution is actually quite good, it looks different from light-generated imaging because of the heat energy.

There are some very important capabilities that come with thermal cameras that aren’t found with other types of cameras.  The first, and perhaps most important, is thermal cameras need zero light to create an image – a plus for situations where adding artificial light isn’t an option. Second, thermal cameras can create images through any condition, such as dust, smoke, fog, rain, or snow. Third, thermal cameras can “see” very long distances – up to 10 to 15 miles away.

When would thermal cameras be the option over more traditional day/night cameras?  They should be considered in situations where there is no light, where obstructions like fog or dust regularly blocks camera images, or one camera needs to cover a very large area or capture images approaching in the distance.

Today’s day/night cameras have become the standard in security camera systems, according to Dan Kloenne, security integration manager with Ready Electric Company.  That’s largely because of the improvements in technology have made the camera price more competitive with other options. However, Kloenne doesn’t discount other ways the day/night cameras save money. Before day/night cameras, he told customers that the best way to get sharper pictures was with increasing light sources. That meant more light installations in warehouses and parking lots. The day/night cameras decrease that need for extra light source.

However, just because day/night cameras are the new standard doesn’t mean they are always the correct choice for a security system.

The bottom line? Before purchasing a day/night camera security system, see the camera in real-life situations whenever possible – preferably in conditions similar to where you will put it – to judge the image quality and determine if the system is the right one for your needs.

Day/Night/Low/Light Cameras: Six Things To Consider…

1. The lens is the most important part of the camera, but the better the lens, the more expensive the camera system.

2. Try out the camera in real-life situations before purchasing. It’s most important to know how the day/night camera will work in low light similar to your circumstances.

3. Consider camera placement. Evaluate the light around the area of the camera. Also consider how the sunlight changes throughout the day and different seasons of the year and how that will affect the camera’s imaging.

4. Do not place a day/night camera in areas of total darkness. The IR illumination needs some light to work best.

5. Consider adjusting the camera to go into night mode before it is totally dark.

6. Do not forget other conditions that could affect camera imaging, such as poor weather, fog, or smoke.

KEYWORDS: day-night cameras patients thermal cameras

Share This Story

Looking for a reprint of this article?
From high-res PDFs to custom plaques, order your copy today!

Sue Marquette Poremba is a contributing writer.

Recommended Content

JOIN TODAY
To unlock your recommendations.

Already have an account? Sign In

  • Security's Top Cybersecurity Leaders 2024

    Security's Top Cybersecurity Leaders 2024

    Security magazine's Top Cybersecurity Leaders 2024 award...
    Security Enterprise Services
    By: Security Staff
  • cyber brain

    The intersection of cybersecurity and artificial intelligence

    Artificial intelligence (AI) is a valuable cybersecurity...
    Security Enterprise Services
    By: Pam Nigro
  • artificial intelligence AI graphic

    Assessing the pros and cons of AI for cybersecurity

    Artificial intelligence (AI) has significant implications...
    Technologies & Solutions
    By: Charles Denyer
Manage My Account
  • Security eNewsletter & Other eNews Alerts
  • eMagazine Subscriptions
  • Manage My Preferences
  • Online Registration
  • Mobile App
  • Subscription Customer Service

The Money Laundering Machine: Inside the global crime epidemic - Episode 24

The Money Laundering Machine: Inside the global crime epidemic - Episode 24

Security’s Top 5 – 2024 Year in Review

Security’s Top 5 – 2024 Year in Review

Middle East Escalation, Humanitarian Law and Disinformation – Episode 25

Middle East Escalation, Humanitarian Law and Disinformation – Episode 25

More Videos

Sponsored Content

Sponsored Content is a special paid section where industry companies provide high quality, objective, non-commercial content around topics of interest to the Security audience. All Sponsored Content is supplied by the advertising company and any opinions expressed in this article are those of the author and not necessarily reflect the views of Security or its parent company, BNP Media. Interested in participating in our Sponsored Content section? Contact your local rep!

close
  • Sureview screen
    Sponsored bySureView Systems

    The Evolution of Automation in the Command Center

  • Crisis Response Team
    Sponsored byEverbridge

    Automate or Fall Behind – Crisis Response at the Speed of Risk

  • Perimeter security
    Sponsored byAMAROK

    Why Property Security is the New Competitive Advantage

Popular Stories

Rendered computer with keyboard

16B Login Credentials Exposed in World’s Largest Data Breach

Verizon on phone screen

61M Records Listed for Sale Online, Allegedly Belong to Verizon

Security’s 2025 Women in Security

Security’s 2025 Women in Security

Red spiderweb

From Retail to Insurance, Scattered Spider Changes Targets

blurry multicolored text on black screen

PowerSchool Education Technology Company Announces Data Breach

2025 Security Benchmark banner

Events

July 17, 2025

Tech in the Jungle: Leveraging Surveillance, Access Control, and Technology in Unique Environments

What do zebras, school groups and high-tech surveillance have in common? They're all part of a day’s work for the security team at the Toledo Zoo.

August 7, 2025

Threats to the Energy Sector: Implications for Corporate and National Security

The energy sector has found itself in the crosshairs of virtually every bad actor on the global stage.

View All Submit An Event

Products

Security Culture: A How-to Guide for Improving Security Culture and Dealing with People Risk in Your Organisation

Security Culture: A How-to Guide for Improving Security Culture and Dealing with People Risk in Your Organisation

See More Products

Related Articles

  • osprey

    Brightening the Night with Day/Night Cameras

    See More
  • Product Spotlight: Surveillance Solutions for Day to Night - Security Magazine

    Product Spotlight: Surveillance Solutions for Day to Night

    See More
  • Day/Night Cameras

    Maintaining Awareness with Day/Night Cameras

    See More

Related Products

See More Products
  • s and the law.jpg

    Surveillance and the Law: Language, Power and Privacy

  • 9780367030407.jpg

    National Security, Personal Privacy and the Law

  • Risk-Analysis.gif

    Risk Analysis and the Security Survey, 4th Edition

See More Products
×

Sign-up to receive top management & result-driven techniques in the industry.

Join over 20,000+ industry leaders who receive our premium content.

SIGN UP TODAY!
  • RESOURCES
    • Advertise
    • Contact Us
    • Store
    • Want More
  • SIGN UP TODAY
    • Create Account
    • eMagazine
    • eNewsletter
    • Customer Service
    • Manage Preferences
  • SERVICES
    • Marketing Services
    • Reprints
    • Market Research
    • List Rental
    • Survey/Respondent Access
  • STAY CONNECTED
    • LinkedIn
    • Facebook
    • YouTube
    • X (Twitter)
  • PRIVACY
    • PRIVACY POLICY
    • TERMS & CONDITIONS
    • DO NOT SELL MY PERSONAL INFORMATION
    • PRIVACY REQUEST
    • ACCESSIBILITY

Copyright ©2025. All Rights Reserved BNP Media.

Design, CMS, Hosting & Web Development :: ePublishing

Security Magazine logo
search
cart
facebook twitter linkedin youtube
  • Sign In
  • Create Account
  • Sign Out
  • My Account
Security Magazine logo
  • NEWS
    • Security Newswire
    • Technologies & Solutions
  • MANAGEMENT
    • Leadership Management
    • Enterprise Services
    • Security Education & Training
    • Logical Security
    • Security & Business Resilience
    • Profiles in Excellence
  • PHYSICAL
    • Access Management
    • Fire & Life Safety
    • Identity Management
    • Physical Security
    • Video Surveillance
    • Case Studies (Physical)
  • CYBER
    • Cybersecurity News
    • More
  • BLOG
  • COLUMNS
    • Cyber Tactics
    • Leadership & Management
    • Security Talk
    • Career Intelligence
    • Leader to Leader
    • Cybersecurity Education & Training
  • EXCLUSIVES
    • Annual Guarding Report
    • Most Influential People in Security
    • The Security Benchmark Report
    • Top Guard and Security Officer Companies
    • Top Cybersecurity Leaders
    • Women in Security
  • SECTORS
    • Arenas / Stadiums / Leagues / Entertainment
    • Banking/Finance/Insurance
    • Construction, Real Estate, Property Management
    • Education: K-12
    • Education: University
    • Government: Federal, State and Local
    • Hospitality & Casinos
    • Hospitals & Medical Centers
    • Infrastructure:Electric,Gas & Water
    • Ports: Sea, Land, & Air
    • Retail/Restaurants/Convenience
    • Transportation/Logistics/Supply Chain/Distribution/ Warehousing
  • EVENTS
    • Industry Events
    • Webinars
    • Solutions by Sector
    • Security 500 Conference
  • MEDIA
    • Videos
      • Cybersecurity & Geopolitical Discussion
      • Ask Me Anything (AMA) Series
    • Podcasts
    • Polls
    • Photo Galleries
  • MORE
    • Call for Entries
    • Classifieds & Job Listings
    • Continuing Education
    • Newsletter
    • Sponsor Insights
    • Store
    • White Papers
  • EMAG
    • eMagazine
    • This Month's Content
    • Advertise
  • SIGN UP!