Low light (361)

Displaying 'Low Light' tags 101 - 125 of 361 in total

Calculating Video Surveillance Storage / Bandwidth

(PRO Only)

Calculating surveillance bandwidth is complex, and inexperienced users can easily underestimate bandwidth, leading to reduced storage durations and/or overloaded networks. The most common way technicians estimate storage is to use manufacturer or...

By IPVM Team - over 2 years ago

Lux Rating / Minimum Illumination Guide

(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 - over 2 years 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 - over 2 years 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 IPVM Team - over 2 years 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 - over 2 years ago

Video Surveillance Bandwidth Guide

(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 IPVM Team - over 2 years ago

Shutter Speed / Exposure Tutorial

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 IPVM Team - over 2 years ago

Dirty Dome Camera Test

(PRO Only)

Dome cameras are the most widely used type professionally but many note that dirt, dust, rain, and scratches can cause image quality problems, especially with integrated IR. We tested an integrated IR dome with these very issues to see how it imp...

By John Scanlan - over 2 years ago

Hanwha Wisenet Q 4MP Tested (QNV-7080R)

(PRO Only)

The 4MP trend continues, now with Hanwha Techwin / Samsung in their latest Wisenet Q series. We bought one of these models, the QNV-7080R, to see how it stacks up against 4MP competitors from Axis and Hikvision in full light, low light (below), W...

By Ethan Ace - over 2 years ago

Sony 35mm Super Low Light Camera Tested

(PRO Only)

Sony is making a big push for their SNCVB770 camera, touting its low light capabilities that they claim can deliver true color in pitch black darkness. While the 'super low' light market segment is definitely growing, Sony's SNCVB770 has a dramat...

By Ethan Ace - over 2 years ago

IR Camera Reflection Test

(PRO Only)

All that might stand between good video and bad in your IR dome is a ring of foam rubber, keeping infrared from reflecting into the lens. Installers may have seen this small part on any number of cameras, The gif below shows removing and replacin...

By Ethan Ace - almost 3 years ago

Bosch First Starlight 1080p Camera Tested

(PRO Only)

Bosch has released their first 'Starlight' 1080p camera, the Flexidome IP starlight 7000 VR. We tested this new dome against competitive super low light models from Axis ('LightFinder') and Hikvision ('DarkFighter'), as well as Bosch's existing 1...

By Ethan Ace - almost 3 years ago

4 Biggest Low Light Problems

(PRO Only)

100 integrators told IPVM what their biggest problems were with low light images. The most commonly cited themes were: Limited IR Range Uneven Coverage Image Noise Cost vs Customer Expectations In this report, we share dozens of integrat...

By Brian Karas - almost 3 years ago

Samsung 'Q' Low-Cost 1080p Dome Tested

(PRO Only)

The most competitive part of the market is for low-cost cameras. Hanwha Techwin / Samsung has released its new low-cost Q series to go after this segment. We bought two of these new Wisenet Q models and tested them against competitive domes from...

By John Scanlan - almost 3 years ago

Axis 4MP Camera Tested (M3046-V)

(PRO Only)

Axis has brought 4MP to its camera line in the new M3046-V, the highest resolution model in their revamped M30 series. We bought and tested this new camera against 4MP models from Dahua and Hikvision to see how low light, full light, and WDR perfo...

By Ethan Ace - almost 3 years ago

Hikvision 4K Camera Tested

(PRO Only)

Hikvision is the most common choice for low price entry level products but they are also competing with low light models, smart CODECs, WDR cameras, and more. In this report, we focus on the growing 4K segment, testing the Hikvision DS-2CD4585F-I...

By Ethan Ace - almost 3 years ago

Pelco Optera 270° Camera Tested

(PRO Only)

Multi-imager cameras are typically 180° or 360°. Pelco has released a fixed 270° versions of their Optera intended to cover exterior building corners, such as this typical view: In this report, we test this new model, compared to a repositiona...

By Ethan Ace - almost 3 years ago

Fisheye Panoramic Camera Guide

(PRO Only)

Fisheye panoramics have become widespread, with most manufacturers offering fisheyes. However, with many options, it can be confusing to understand the tradeoffs. In this guide, we explain: Why Panoramic Camers Fisheye Panoramic Basics 'Warp...

By Ethan Ace - almost 3 years ago

Dahua Smart H.264+ Tested

(PRO Only)

The smart codec trend continues, with Dahua adding Smart H.264+ to many of their models in new firmware. In this test we see how it performs and how it compares to Dahua's key competitor Hikvision and their H.264+ smart codec in day and night sce...

By Ethan Ace - almost 3 years ago

21 Scenes Lux Readings For Video Surveillance

(PRO Only)

IPVM went to numerous locations and measured the lux readings / light levels at each one. Here is an example of the approach we took and output created:   Many surveillance professionals know that knowing light levels is important but tend not t...

By John Scanlan - almost 3 years ago

Vivotek 12MP IR Multi-Imager Tested

(PRO Only)

A key weakness of multi-imager cameras is poor low light. While integrated IR has become dominant in cameras overall, it is still uncommon in multi-imager cameras. But now, Vivotek has released the MS8391-EV, a 12MP multi imager model touting 30...

By Ethan Ace - almost 3 years ago

Integrated IR Camera Use Dominates - 2016 Statistics

(PRO Only)

In 2014, IPVM statistics showed integrated IR camera use was surging. Now, new IPVM statistics show that the surge continues, with integrated IR camera use now dominating the market. In this note, we provide the statistics and examine trends tha...

By Brian Karas - almost 3 years ago

Pelco Optera 180° Camera Tested

(PRO Only)

In our initial testing of Pelco's Optera multi-imager, the main issue was their ONVIF 'bowtie' video streaming which undermined third party integration.  Now, Pelco has released new firmware that they say fixes this problem with what they call 't...

By Ethan Ace - almost 3 years ago

Hikvision 12MP IR 360 Camera Tested 2016

(PRO Only)

Hikvision has released their latest IR panoramic camera, the DS-2CD63C2F-IV, with a 12MP sensor.  To find out, we bought one of these new models and tested against Panasonic's 12MP entry, the WV-SFV481, one of the best performing panoramic camera...

By Ethan Ace - almost 3 years ago

4MP Low Light Weakness Tested 2016

(PRO Only)

4MP cameras are an emerging force in video surveillance, with many manufacturers now focusing on 4MP as their new high end, surpassing 1080p. However, IPVM has found a specific weakness in low light capabilities versus 1080p and not simply in ult...

By Ethan Ace - about 3 years ago

Displaying 'Low Light' tags 101 - 125 of 361 in total