Low light (275)

Displaying 'Low Light' tags 1 - 25 of 275 in total

Camera Course Winter 2017

Learn video surveillance and get certified. IPVM provides live online classes, recorded videos, personal help, cutting edge education and certification. Winter Camera Class. Register Now. We have just substantially rewritten the course and ...

By Brian Rhodes - 18 days ago

Avigilon Pro 4K Camera Tested

(PRO Only)

Avigilon is best known for their large sensor, high megapixel cameras. But with new offerings from Sony and soon Axis, the questions is how well their H4 Pro Series can keep up with competitors. In this report, we tested the Avigilon 4K Pro (8L-H...

By Ethan Ace - 20 days ago

Surveillance Cameras 2017 Review

(PRO Only)

This report concisely explains the developments and most common options for surveillance cameras offered in 2017, including resolution, H.265, HD analog, image quality, video analytics and cost. Compared to surveillance camera developments in 201...

By John Honovich - 21 days ago

Calculating Video Surveillance Storage / Bandwidth

(PRO Only)

Calculating surveillance bandwidth is complex, and inexperienced users can easily underestimate bandwidth, leading to reduced storage durations and/or overloaded networks. The most common way technicians estimate storage is to use manufacturer or...

By IPVM Team - 25 days ago

Lux Rating / Minimum Illumination Guide 2017

(PRO Only)

Lux ratings are one of the poorest specifications to use in selecting cameras. Now, with the rise of integrated IR, they are increasingly useless. You need to be able to understand why lux rating (aka minimum illumination specifications) are so p...

By IPVM Team - about 1 month ago

The PPF / PPM Video Surveillance Guide

(PRO Only)

Pixels per foot / Pixels per meter is the most fundamental and valuable, though imperfect, metric for specifying video surveillance image quality. In a single number, this metric (e.g., 10ppf, 40ppf, 100ppf) conveys important information about wh...

By IPVM Team - about 1 month ago

Surveillance Camera Imager Tutorial

(PRO Only)

Imagers - CCD, CMOS, 1/2", 1/4", big pixels, small pixels, etc. In this tutorial, we explain the fundamental issues and drivers in surveillance camera imagers, including: Sensor vs Imager CCD vs CMOS Imager Manufacturers Camera Manufacturer...

By John Honovich - about 1 month ago

IR Video Surveillance Tutorial 2017

(PRO Only)

Almost all surveillance cameras perform worse in low light than they do in the day time. One of the most common techniques to overcome this is to add infrared (IR) illumination. However, adding IR has its own tradeoffs, with several options availa...

By John Honovich - about 1 month ago

WDR Tutorial 2017

(PRO Only)

Understanding wide dynamic range (WDR) is critical to capturing high quality images in demanding conditions. However, with no real standards, any manufacturer can claim WDR, and many do even if actual performance is weak, causing confusion for eve...

By IPVM Team - about 1 month ago

HD Analog vs IP Guide 2017

(PRO Only)

For years, HD resolution was IP camera's greatest advantage. However, starting in 2013, analog cameras with HD resolution started shipping and, now, just a few years later, HD analog has become a significant force in the video surveillance indust...

By IPVM Team - about 1 month ago

F-Stop Tutorial

(PRO Only)

To understand low light surveillance, appreciating the importance and role of the f-stop metric is critical. In this tutorial, we explain: Why minidomes and other small form factor cameras typically have far worse f numbers How the range of a ...

By IPVM Team - about 1 month ago

Video Surveillance Bandwidth Guide 2017

(PRO Only)

Bandwidth is one of the most fundamental, complex and overlooked aspects of video surveillance. Many simply assume it is a linear function of resolution and frame rate. Not only is that wrong, it misses a number of other critical elements and fai...

By Ethan Ace - about 1 month ago

Resolution Tutorial

(PRO Only)

Understanding video surveillance resolution can be surprisingly difficult and complex. While the word 'resolution' seems self-explanatory, its use in surveillance is far from it. In this tutorial, we will explain 5 critical elements: What resol...

By John Honovich - about 1 month ago

Shutter Speed / Exposure Tutorial

(PRO Only)

Surveillance users do not need to be photography experts but understanding the basics of shutter speed is critical to avoiding major low light problems. In low light conditions, surveillance video can appear blurry and objects will look like ghost...

By John Honovich - about 2 months ago

Dirty Dome Camera Test

(PRO Only)

Dome cameras are the most widely used type professionally but many note that dirt, dust, rain, and scratches can cause image quality problems, especially with integrated IR. We tested an integrated IR dome with these very issues to see how it imp...

By John Scanlan - about 2 months ago

Samsung Wisenet Q 4MP Tested

(PRO Only)

The 4MP trend continues, now with Hanwha Techwin / Samsung in their latest Wisenet Q series. We bought one of these models, the QNV-7080R, to see how it stacks up against 4MP competitors from Axis and Hikvision in full light, low light (below), W...

By Ethan Ace - 3 months ago

Sony 35mm Super Low Light Camera Tested

(PRO Only)

Sony is making a big push for their SNCVB770 camera, touting its low light capabilities that they claim can deliver true color in pitch black darkness. While the 'super low' light market segment is definitely growing, Sony's SNCVB770 has a dramat...

By Ethan Ace - 3 months ago

IR Camera Reflection Test

(PRO Only)

All that might stand between good video and bad in your IR dome is a ring of foam rubber, keeping infrared from reflecting into the lens. Installers may have seen this small part on any number of cameras, The gif below shows removing and replacin...

By Ethan Ace - 3 months ago

Bosch First Starlight 1080p Camera Tested

(PRO Only)

Bosch has released their first 'Starlight' 1080p camera, the Flexidome IP starlight 7000 VR. We tested this new dome against competitive super low light models from Axis ('LightFinder') and Hikvision ('DarkFighter'), as well as Bosch's existing 1...

By Ethan Ace - 3 months ago

4 Biggest Low Light Problems

(PRO Only)

100 integrators told IPVM what their biggest problems were with low light images. The most commonly cited themes were: Limited IR Range Uneven Coverage Image Noise Cost vs Customer Expectations In this report, we share dozens of integrat...

By Brian Karas - 4 months ago

Samsung 'Q' Low-Cost 1080p Dome Tested

(PRO Only)

The most competitive part of the market is for low-cost cameras. Hanwha Techwin / Samsung has released its new low-cost Q series to go after this segment. We bought two of these new Wisenet Q models and tested them against competitive domes from...

By John Scanlan - 4 months ago

Axis 4MP Camera Tested (M3046-V)

(PRO Only)

Axis has brought 4MP to its camera line in the new M3046-V, the highest resolution model in their revamped M30 series. We bought and tested this new camera against 4MP models from Dahua and Hikvision to see how low light, full light, and WDR perfo...

By Ethan Ace - 4 months ago

History of Video Surveillance

This is a concise history of video surveillance covering the past decade.  The goal is to help professionals newer to the industry understand the important business and technology shifts that impact the market today. It is not intended to cover...

By John Honovich - 4 months ago

Hikvision 4K Camera Tested

(PRO Only)

Hikvision is the most common choice for low price entry level products but they are also competing with low light models, smart CODECs, WDR cameras, and more. In this report, we focus on the growing 4K segment, testing the Hikvision DS-2CD4585F-I...

By Ethan Ace - 5 months ago

Pelco Optera 270° Camera Tested

(PRO Only)

Multi-imager cameras are typically 180° or 360°. Pelco has released a fixed 270° versions of their Optera intended to cover exterior building corners, such as this typical view: In this report, we test this new model, compared to a repositiona...

By Ethan Ace - 5 months ago

Displaying 'Low Light' tags 1 - 25 of 275 in total