Panoramic cameras using 'fisheye' lens have become commonplace in video surveillance over the past decade. Now, researchers are working on 'metalenses' that aim to be thinner and less expensive. This gained mainstream attention recently when ...
By Zach Segal - 2 months ago
Mobotix is attempting a turn-around, struggling for years, then releasing the OEMed Move line, Mobotix is aiming for its new 7th generation line to stand out. We purchased an M73, along with Mobotix's recommended optical and IR Illumination mod...
By Rob Kilpatrick and Derek Ward - 9 months ago
Cameras come in many shapes, sizes and specifications. This 101 examines the basics of cameras and features used in 2020. In this report, we review the basics of cameras, including: Core components of cameras Analog vs. IP cameras Common...
By IPVM Team - 9 months ago
This directory provides definitions and explanations for over 90 common video surveillance industry terms, including links to related IPVM tutorials and guides. This directory will be continuously updated. If there is a term you want to be in...
By IPVM Team - 10 months ago
Field of View (FoV) and Angle of View (AoV), are deceptively complex. At their most basic, they simply describe what the camera can "see" and seem self-explanatory. However, when analyzing images, comparing cameras or projecting quality, subtletie...
By IPVM Team - about 1 year ago
Camera focus is fundamental to quality imaging. Mistakes can significantly reduce details, making cameras less effective. In this guide, we explain focus issues and proper procedure, covering: Fixed vs. Varifocal Cameras Auto vs. Manual Foc...
By IPVM Team - about 1 year ago
Cameras, like humans, have irises, controlling the light which hits the imager and impacting image details. However, cameras have multiple types of iris options - fixed, manual, and auto, and variants of each which can be confusing for new users a...
By IPVM Team - over 1 year ago
3mm, 6mm, 2.8 - 9mm, 5 - 50mm, etc. Camera specifications often list lens lengths but what do they mean? These metrics are important in determining the correct camera coverage and Field of View (FoV). In this tutorial, we look at: What lens...
By IPVM Team - over 1 year ago
Repositionable multi-imager cameras are one of the fastest growing segments in video surveillance, with a slew of new offerings being recently released but who is the best and worst? To see who stands out, we bought and tested 10 repositionable...
By Ethan Ace and Rob Kilpatrick - over 1 year ago
Panasonic has released their first multi imager models including the 32MP (4x4K) WV-X8570N, claiming "Extreme image quality for evidence capturing under challenging conditions", "outstanding low light", and "Super Dynamic" performance. We bough...
By Ethan Ace and Rob Kilpatrick - over 1 year ago
Axis has released their first IR multi imager, the P3717-PLE, a repositionable model listing 360° IR illumination and flexible positioning, addressing major limitations of their first generation P3707-PE. We bought and tested the P3717-PLE to see ...
By Rob Kilpatrick - almost 2 years ago
Hanwha's first repositionable multi imager PNM-9081VQ tested well, but was huge, over 12" wide and weighing in at over 10 pounds. Now, they have released their second generation, the PNM-9000VQ, aiming to remedy this issue with smaller size and mo...
By Ethan Ace - almost 2 years ago
Avigilon has announced the H4 Multisensor, the successor to their repositionable multi imager line, adding features like H.265, integrated IR, higher resolution, smaller sensor modules, and more. In this note, we look at the features of this new ...
By Ethan Ace - over 2 years ago
Camera installation is the most fundamental and common task for video security technicians. Because of this, camera manufacturers market their products as easier and quicker to install versus the competition, in addition to the quality images they...
By IPVM Team - over 2 years ago
This guide starts our physical installation for video surveillance series, starting with Box Cameras, one of the oldest and most basic types. Inside we cover: Videos Detailing Grid Ceiling Installs Videos Detailing Drywall/Gypsum Board Install...
By IPVM Team - over 2 years ago
Fisheye panoramics have not had much innovation in the past few years, with their multi-imager cousins getting most of the advances, e.g., repositionable panoramics. Now, Axis is launching 2 new panoramic cameras including an 9MP one with a stere...
By Ethan Ace - over 2 years ago
Dahua is going big. Their new 4K HF8835F Micro Four Thirds sensor is one of the largest now on the market. Dahua is claming: Starlight Technology and Ultra Wide Dynamic Range to produce crisp, clear images with minimal ambient light How wel...
By John Scanlan - over 2 years ago
When selecting surveillance cameras, users may choose from a number of different form factors, each with its own unique strengths and weaknesses, varying in physical size, aesthetics, vandal resistance, and advanced features provided. In this r...
By IPVM Team - over 2 years ago
4K has made its way to IR PTZs. In this report, we examine the Dahua 6AE830VNI [link no longer available], a 4K PTZ with 30x optical zoom, 200m (~650') integrated IR, and 1/1.7" 4K sensor, to see how it performed in daytime and night time scenes...
By Ethan Ace - over 3 years ago
RFPs are hard. Do them 'right' and it takes a lot of knowledge and time. Do them 'wrong' and you can be (a) unwittingly locked into a specific vendor or (b) be forced to accept inferior quality products. This guide helps IP camera purchasers ...
By IPVM Team - over 3 years ago
Technicians encounter multiple hazards when running wires and installing security devices. Wearing personal protective equipment, or PPE, helps protect against these hazards and mitigate the chance and severity of injuries. Enforcing a strict PPE ...
By John Honovich - over 3 years ago
Varifocal camera lenses provide more flexibility at installation time, but come at a higher cost. Fixed lens cameras reduce hardware costs, but can make getting the right Field of View more difficult or costly. How often do integrators choose one...
By IPVM Team - over 3 years ago
Hikvision has entered the multi-imager market with their 180° PanoVu DS-2CD6986F-H, an 8MP, 4-imager model equipped with ~1/1.8" imagers and Hikvision's Darkfighter super low light capabilities. We bought the Hikvision DS-2CD6986F-H and tested it...
By Ethan Ace - almost 4 years ago
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 - almost 4 years ago
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 - almost 4 years ago
