Tutorials (189)

Displaying 'Tutorials' tags 1 - 25 of 189 in total

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

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

ONVIF Tutorial 2017

(PRO Only)

ONVIF is well known within the surveillance industry as an interface to connect IP cameras and VMS systems but: Is ONVIF a 'Standard'? Why ONVIF? What does ONVIF do? What does it consist of? Who supports ONVIF? What does that mean? What are...

By IPVM Team - about 1 month ago

Lens Iris Tutorial

(PRO Only)

Cameras, like humans, have irises. However, cameras have five types of iris options - fixed, manual, auto, P iris. In this tutorial, we explain the tradeoffs of each, how irises work and how they relate to shutter speed. Controlling Light Camera...

By IPVM Team - about 1 month ago

API / SDK Tutorial

(PRO Only)

While Application Programming Interfaces (APIs) are key to 'open' platforms, they are frequently misunderstood and over-hyped in physical security. While APIs can provide great benefits, using them is much more complex than often mentioned in sale...

By John Honovich - 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

Power Drill Selection Guide

(PRO Only)

Boring holes is a basic part of running cables for most security system projects. To do so, you will need to choose the right drills for various scenarios. This guide will help you understand the different types of drills available and the tradeo...

By Ari Erenthal - about 2 months ago

Smart CODEC Guide

(PRO Only)

Smart codecs are a next 'big thing'. With cameras having more and more processing power available, it is enabling them to make 'smarter' decisions about how they compress video. The marketing names will vary. Some include 'Zipstream', 'Smart Cod...

By IPVM Team - about 2 months 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

Solutions to 5 Common Access Control Problems

(PRO Only)

Effective security is more than just good equipment. In fact, thousands of dollars in electronic access control can be wasted if they are not used properly. In many cases, proper operational controls fail to be implemented and enforced. In IPVM's...

By Brian Rhodes - 2 months ago

Intrusion Motion Sensors Tutorial

(PRO Only)

Motion sensors are one of the most common, and most useful alarm sensors, but they also often cause problems. Many motion sensors types exist and their suitability vary across applications. As such, knowing the differences in types and what impact...

By Brian Rhodes - 4 months ago

Access Door Controller Configuration Guide

(PRO Only)

Properly configuring access control door controllers is key to a professional system. These devices have fundamental settings that must be configured appropriately, including: Unlock times / extended unlock times Door Hold Open Alarms Reques...

By Brian Rhodes - 4 months ago

VLANs for Video Surveillance Tutorial

(PRO Only)

Many people confidently say to 'use VLANs' as an answer to IP video networking problems and as a way to signal expertise. But how should VLANs be used? What benefits do they really deliver or not? In the note, we examine: Segmentation of appl...

By John Scanlan - 4 months ago

Door Fundamentals For Electronic Access Control

(PRO Only)

Assuming every door can be secured with either a maglock or an electric strike can be a painful assumption in the field. While those items can be applied flexibly with various openings, there are occasions where certain hardware cannot be used. A...

By Brian Rhodes - 4 months ago

How to Measure Video Quality / Compression Levels

(PRO Only)

Two cameras have the same resolution, frame rate and scene monitored but camera A consumes half the bandwidth than camera B. Is Camera A better? You cannot tell until you first check / compare compression levels. It can be hard to determine which...

By Ethan Ace - 4 months ago

PTZ Camera Guide 2016

(PRO Only)

Pan/Tilt/Zoom cameras remain critical parts of many surveillance systems, especially in large security operations. Because of this it is important to understand and consider the key elements in selecting and using PTZ cameras. In this guide we co...

By Ethan Ace - 4 months ago

Panoramic Camera (Fisheye / Multi-Imager) Guide

(PRO Only)

Panoramic cameras, including fisheyes and multi-imagers, have become increasingly widespread, with most manufacturers offering fisheyes and an increasing number offering multi-imagers. However, with many options, it can be confusing to understand...

By Ethan Ace - 5 months ago

Tailgating - Access Control Tutorial

(PRO Only)

Despite costing thousands of dollars per door, electronic access control systems are vulnerable to an easy exploit called 'tailgating'. Unless this threat is recognized and addressed, even a friendly gesture compromises one's security investment. ...

By Brian Rhodes - 5 months ago

Cameras Mounted On Poles Primer

(PRO Only)

Poles are a popular but challenging choice for deploying surveillance cameras. Poles are indispensable for putting cameras at the right height to get the best picture and for keeping cameras out of harm's way. However, mounting cameras on poles c...

By Brian Rhodes - 5 months ago

Building Occupancy Codes and Access Control Tutorial

(PRO Only)

A building or room's classification can greatly impact which building codes must be followed. In terms of access control, these 'occupancy codes' dictate how openings can be locked and what equipment is required, often representing a range of hund...

By Brian Rhodes - 5 months ago

Displaying 'Tutorials' tags 1 - 25 of 189 in total