Lenses (99)

Displaying 'Lenses' tags 51 - 75 of 99 in total

Testing The Real Resolution of MP Cameras (Line Count)

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...

By Ethan Ace - over 7 years ago

Brickcom Immervision Panomorph 360 Test

Immervision was one of the earliest providers of 180 / 360 imaging in the surveillance market. With their CS mount lenses [link no longer available], Immervision offered a different technology (panomorph [link no longer available]) and approach to...

By Ethan Ace - over 7 years ago

Axis M30 Minidome Shootout

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...

By Ethan Ace - almost 8 years ago

Axis MP Pinhole Shootout

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...

By Ethan Ace - almost 8 years ago

Bug Eye Camera Reviewed

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...

By Carlton Purvis - about 8 years ago

240 MP DHS Panoramic Camera (ISIS)

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 - about 8 years ago

Focusing Panoramic Cameras

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 - about 8 years ago

Pelco IL10 Value Line Reviewed

Pelco is getting into the IP budget market with its new IL10 Value Line [link no longer available], 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...

By John Honovich - about 8 years ago

Lens Selection Recommendations

Selecting the right lens can be confusing and tough, especially because lenses are often integrated into cameras, severely restricting flexibility to mix and match the right lens feature sets. In this tutorial, we examine 7 key criteria in...

By John Honovich - over 8 years ago

Iris Vs Shutter Speed

Surveillance cameras must deal with wide variations of lighting -- automatically and continuously. It can be 10,000+ lux during the day and under 1 lux at night. In a few seconds, lighting can drop dramatically, for example, if the sun goes behind...

By John Honovich - over 8 years ago

Thermal Camera Tutorial

Thermal cameras can deliver where visible conventional cameras fail, but they come with significant tradeoffs which must be considered. In this tutorial, we cover these topics, including: Thermal image detail Detection, no...

By Ethan Ace - over 8 years ago

Documenting Camera Layout

Documenting camera layouts can be important: Ensuring that you have a realistic field of view that covers the area you want with the sufficient coverage Understanding what gaps in coverage you might have and where there are overlaps Selecting...

By Ethan Ace - over 8 years ago

360 / Panoramic Cameras Selection

A number of important considerations should be factored in when selecting Panoramic / 360 degree cameras. Key ones include: (1) limited VMS support, (2) low light issues, (3) Wide Dynamic Range problems, (4) pixel density limitations and (5)...

By John Honovich - over 8 years ago

Minidomes vs Full Size Dome Tradeoffs

Not too long ago, dome cameras were huge, fitting a full-size box camera into a large protective bubble. The move to "minidomes" changed that, cutting their size in half or smaller. Now, the definition of "mini" has changed again, with even...

By Ethan Ace - over 8 years ago

Sentry360 FullSight 180 Cameras Examined

180 and 360 degree cameras continue to increase in popularity, with a number of manufacturers releasing new product in the past year. Sentry360, best known for their 360º line, has now announced two models of 180º cameras to compliment them. In...

By Ethan Ace - over 8 years ago

Axis Goes Covert (P12 Pinhole MP)

Try finding an IP pinhole camera or a MP pinhole camera. Even in 2012, it is nearly impossible and the choice is essentially analog or nothing. Attempting to solve this problem is Axis's new P12 release. Of course, Axis is neither alone nor first....

By Ethan Ace - almost 9 years ago

Pan/Tilt Camera Selection Guide

Multiple styles of PTZ are available, though little clear-cut guidance on which is best for a given application is available, making camera selection difficult for inexperienced users. In this note, we overview the three main types of PTZ...

By Ethan Ace - about 9 years ago

Sentry360's 14MP Camera

While best known for panoramic cameras, Sentry360 also offers a line of multi-megapixel fixed cameras with up to 14MP resolution. This is rare in the industry, with Arecont and Avigilon being the most notable products currently in this space. In...

By Ethan Ace - over 9 years ago

Sentry 360 Panoramic Cameras

In this update, we will examine the panoramic camera offerings of Sentry360. This camera line differs from competitors in key ways, with a broader line, increased resolution, and wider VMS support. We will look at these features, pricing, and how...

By Ethan Ace - over 9 years ago

Directory of Lens Tests

This directory collects our lens test reports and related lens information. Lens Tests HD Lens Shootout - Our most popular and 'flagship' lens test pits a number of lens manufacturers (like Fujinon, Tamron, Computar, etc.) to see which one...

By John Honovich - over 9 years ago

Varifocal vs. Fixed Lens Integrator Preference 2011

UPDATE: See newer results from 2017 here. When selecting lenses for surveillance cameras, there are two fundamental options: varifocal and fixed focal length. Varifocal lenses allow the field of view to be adjusted within a range (e.g. 3-8mm,...

By Ethan Ace - over 9 years ago

Raytec Vario Illuminators Examined

Raytec has announced a new line of both white light and infrared illuminators, named Vario, which provides novel features not normally seen in the IR illuminator space. In this update, we'll examine the features of the Vario line, and how it...

By Ethan Ace - over 9 years ago

Auto Back Focus (ABF) Preference Statistics

Auto back focus has become a more common feature in the past couple of years, with many, if not most, new IP camera offerings containing this capability. Manufacturers claim that auto back focus reduces installation time and makes focusing cameras...

By Ethan Ace - over 9 years ago

Axis P5544 Panoramic PTZ Camera Examined

In this note, we examine the Axis P5544, Axis's first panoramic camera and one of the most novel offerings in the market - combining both optical/mechanical PTZ functionality and panoramic / 360 degree imaging. The big question we focus on inside...

By John Honovich - over 9 years ago

Pentax Plus Megapixel Lens Test

Last month, we released the first ever Megapixel lens test where we did a shootout between 5 leading surveillance lens manufacturers - Computar, Evetar, Fujinon, Tamron and Tuss. Member feedback was very encouraging and the lessons learned in...

By John Honovich - over 9 years ago

Displaying 'Lenses' tags 51 - 75 of 99 in total