Lenses (91)

Displaying 'Lenses' tags 26 - 50 of 91 in total

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 - about 3 years 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 - about 3 years 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 - about 3 years 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 - over 3 years 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 3 years 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 3 years 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 - over 4 years ago

Lens Focal 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 - over 4 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 4 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 4 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 4 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 4 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 4 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 - almost 5 years ago

Varifocal vs Fixed Focal Lens

(PRO Only)

Choosing between varifocal and fixed focal lens is one of the most fundamental decisions in video surveillance. With a fixed focal lens, the Field of View (FoV) of the camera can not be changed unless the lens is changed. By contrast, varifocal l...

By John Honovich - almost 5 years ago

IP Camera Buyer's Guide 2014

(PRO Only)

The 2014 IPVM IP Camera Buyer's Guide provides recommendations on the right types of cameras to choose, the strongest manufacturers to consider and the best overall values. Trending Manufacturers We explain what manufacturer's products have si...

By Ethan Ace - almost 5 years ago

Make Your Own Cameras in Your Garage

(PRO Only)

[WARNING: Do not use this company. We strongly recommend against it.] Yes, I am looking at you, trunkslammer, the next great American manufacturer. One of the more peculiar exhibits at ISC West 2014 was this company: They claim to empower you...

By Ethan Ace - almost 5 years ago

Testing The Real Resolution of MP Cameras (Line Count)

(PRO Only)

Resolution has problems. IP cameras equate resolution with pixels, ignoring that pixels are simply mechanical components of a camera, not the full performance of said camera. Indeed, it has gotten so bad, we have recommended that we Ban Resolutio...

By Ethan Ace - over 5 years ago

Brickcom Immervision Panomorph 360 Test

(PRO Only)

Immervision was one of the earliest providers of 180 / 360 imaging in the surveillance market. With their CS mount lenses, Immervision offered a different technology (panomorph) and approach to adding 180 / 360 imaging to conventional box cameras....

By Ethan Ace - over 5 years ago

Axis M30 Minidome Shootout

(PRO Only)

Minidomes are popular. Their combination of low cost and small size make them a common choice for many surveillance applications. One series in particular, the Axis M30, is mentioned on IPVM frequently, both positively and negatively. We bought t...

By Ethan Ace - over 5 years ago

Axis MP Pinhole Shootout

(PRO Only)

For covert surveillance, pinhole lenses / cameras are a common choice because they can be hidden behind walls, or in ordinary objects. Until recently, the only options were analog / SD. However, Axis launched the P12 series, bringing 720p MP to pi...

By Ethan Ace - almost 6 years ago

Bug Eye Camera Reviewed

(PRO Only)

In the past month, the so called 'bug eye' camera has captured popular attention around the world, from Nature Magazine, to CNN, to the BBC, and dozens more. A research team at the University of Illinois-Urbana Champaign has developed a camera tha...

By Carlton Purvis - almost 6 years ago

240 MP DHS Panoramic Camera (ISIS)

(PRO Only)

The US Department of Homeland Security is developing a 240MP 8fps 'super' camera. We spoke with them in depth and prepared the following report on key technical, operational and pricing details: One of the main problems of tracking suspects with ...

By Carlton Purvis - almost 6 years ago

Focusing Panoramic Cameras

(PRO Only)

Focusing panoramic cameras is really important. Indeed, after testing 9 different panoramic cameras across many manufacturers, we believe this must be done manually for each camera. This might seem unnecessary as panoramic cameras are, after all, ...

By Ethan Ace - almost 6 years ago

Pelco IL10 Value Line Reviewed

(PRO Only)

Pelco is getting into the IP budget market with its new IL10 Value Line, its lowest cost IP cameras ever. In this note, we examine the key features and omissions of these offerings plus a comparison to Axis's M series and other budget offerings. ...

By John Honovich - almost 6 years ago

Displaying 'Lenses' tags 26 - 50 of 91 in total