Lenses (83)

Displaying 'Lenses' tags 1 - 25 of 83 in total

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

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

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

Genetec Lower Cost Sharp V LPR Camera

(PRO Only)

Genetec has announced the latest offering in their AutoVu Sharp line, promising new features, simplified installation, and lower price. In this note, we examine these new features, lower pricing, how it compares to past models and competitors, pl...

By Ethan Ace - 2 months ago

Testing EF Lenses On IP Camera

(PRO Only)

Glass. IP cameras are often characterized as using lower quality 'glass' and that those lenses reduce image quality. By contrast, Canon EF lenses are widely viewed as superior and for higher quality photography work. What if you put an EF lens o...

By Ethan Ace - 2 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

Axis / Canon Launch 20MP Avigilon Rival

(PRO Only)

For years, Avigilon has essentially owned the 'super high resolution' single imager market. And Axis has resisted, most famously in 2012, when Axis declared the MP race over. But now, Axis is teaming up with their parent company Canon to go afte...

By IPVM Team - 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

Selling Super High Resolution Cameras

(PRO Only)

Is bigger better? In the past decade, the surveillance industry has moved from 0.3MP to 1MP to 2MP to 3MP to 5MP to 4K (8.3MP), etc. But there are even higher resolution cameras above that. This report covers selling those super high resolution ...

By IPVM Team - 7 months ago

Selling Low Cost Kits

(PRO Only)

Low-cost kits have become a direct threat to security integrators. These kits offer a drastically discounted alternative to professional brands, used by more than just residential users, as our Police Buys FLIR at Costco, Industry's Worst Fear re...

By Brian Karas - 7 months ago

Axis New Industry Standard i-CS Lens

(PRO Only)

Is this the next big thing in lensing? 7 years ago, Axis launched P-iris. Now, Axis has announced i-CS, which is even more 'intelligent'. But how much practical use is it? In this report, we examine Axis' i-CS lens technology, compare it to othe...

By Brian Karas - 7 months ago

Raytec Vario IP Illuminator Tested

(PRO Only)

The Raytec Vario IP offers advanced features not commonly found, including interchangeable lenses with varying angles (10-120˚) and ranges (98'-550') plus network control of power, switching, "deterrent" patterns, illuminator groups, and more. Th...

By Ethan Ace - 11 months ago

Bosch IR PTZ Tested

(PRO Only)

PTZs have historically struggled in low light, with integrated IR being uncommon. In the past few years, this has changed, as some integrated IR models have emerged. However, in previous tests, we have seen significant focus issues making tracking...

By Ethan Ace - 11 months ago

Axis vs Avigilon vs FLIR vs Hikvision vs Samsung Camera Pricing

(PRO Only)

The 'race to the bottom' is a big issue, with average prices dropping sharply over the past few years. But who is racing the hardest? And how do manufacturers compare? To find out, we compared cameras from Avigilon, Axis, FLIR, Hikvision, and Sam...

By Ethan Ace - 12 months ago

Avigilon HD Multisensor Camera Tested

(PRO Only)

Avigilon has released 9MP and 12MP HD Multisensor cameras, adding reposition-able sensors with remote focus and zoom, features not before seen in the expanding multi-imager market. However, with Arecont no longer the only game in town, and Axis (...

By Ethan Ace - about 1 year ago

Dahua Starlight 1/2" Camera Tested

(PRO Only)

In super low light, an area that the West has long dominated, can the Chinese manufacturers beat their Western rivals? Dahua has a new 'Starlight' offering, featuring a 1/2" imager, priced ~$300 online.  We bought one, the Dahua Starlight IPC-HF...

By Ethan Ace - over 1 year ago

Super Low Light HD Lens Tested

(PRO Only)

A smaller F-number can make a big difference in how much light reaches an imager. For example, the difference even between a f/1.2 and f/1.0, which may seem very close, can be significant, as shown by our F-Stop Calculator: However, almost all...

By Ethan Ace - over 1 year ago

Camera Lens Finder Released

(PRO Only)

Need a camera with a 100° AoV or greater? Want a camera with a built in 20mm lens? Looking for a camera that supports at least 3-10mm varifocal? Often, professionals need to find cameras with particular lens lengths / Angle of Views (AoV). This...

By John Honovich - about 2 years ago

Focal Lens Length Tutorial

(PRO Only)

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 f...

By John Honovich - about 2 years ago

Testing Arecont Omni

(PRO Only)

The Arecont SurroundVideo Omni is one of the most novel new camera offerings in the past few years. Like their 180 and 360 predecessors, the Omni supports 4 imagers / cameras inside. The major advance is that the imagers can now be repositioned a...

By Ethan Ace - over 2 years ago

Startup: The Bublcam

(PRO Only)

Multi-imager fisheye cameras are not new, but a startup is releasing a camera that can see in any direction all at once. Bubl is more than a 360 fisheye camera, because it has lenses built into a sphere with images all stiched together in a single...

By John Honovich - over 2 years ago

A Major Flaw in Long Lenses and PTZs Found

(PRO Only)

Theoretically, long lenses should let you capture faces and license plates very far away. For example, over 900 feet away from a 1080p camera one should get over 40ppf from a 100mm lens. But how well does this work in practice? In this test, we...

By Ethan Ace - over 2 years ago

Field of View (FoV) Tutorial

(PRO Only)

Field of View, or FoV, is deceptively complex. At its most basic, it is simply what the camera can 'see' and is, therefore, visually self-evident. However, when analyzing images, comparing cameras or projecting quality, FoV subtleties can have a b...

By John Honovich - over 2 years ago

Camera Calculator Version 1 Released

The new IPVM Camera Calculator is a game changer that enables you to truly see and understand what image quality and coverage you will get from various combinations of lenses and resolutions. [UPDATE April 2015: Version 2 of the Camera Calculator...

By John Honovich - over 2 years ago

Testing Polarizing Filters on HD Cameras

(PRO Only)

Sun glare is particularly challenging for surveillance cameras. Even top cameras struggle with such conditions. One technique suggested is using polarizing filters. Simply put, these filters pass certain polarizations of light, while blocking oth...

By Ethan Ace - over 2 years ago

Displaying 'Lenses' tags 1 - 25 of 83 in total