3 Key Differentiators in Megapixel Camera Testing

Author: John Honovich, Published on May 20, 2009

3 important differentiators among the cameras I am currently testing:

  • Effective or 'true' resolution: The stated pixel count (1.3MP, 2MP, etc) is proving to be a misleading metric to judge cameras. More pixels often do not mean better image quality. This is a critical element as better image quality (the ability to see smaller details) is the key driver in the use of megapixel.
  • Bandwidth consumption variation: I see wide variances in how much bandwidth is consumed, both depending on the scene and, more interestingly, between manufacturers. Some manufacturers are using 2Mb/s for a given scene while other need 6-8Mb/s. This could be a major factor in choosing cameras as the differences in storage could be quite expensive.
  • Handling low or changing bandwidth levels: Some cameras have significant problems with insufficient bandwidth. The image will break up almost entirely under these conditions. It is essential that surveillance cameras are robust to lower bandwidth. While it's obviously understood and accepted that with less bandwidth, either frame rate or quality will suffer somewhat, the connection and the basic image must remain.
These are certainly not the only 3 issues - just issues that generally receive less attention. Additionally, I am still in the process of investigating CPU utilization.D Finally, low light/WDR remain important issues for megapixel as they do for all surveillance cameras.
Comments : PRO Members only. Login. or Join.

Related Reports on Bandwidth

Eagle Eye Networks Cloud VMS Tested on Jul 26, 2018
Eagle Eye has become one of the most significant players in the industry in the past few years: Eagle Eye's Owner Acquired Brivo Eagle Eye...
July 2018 IP Networking Course on Jul 12, 2018
Registration is closed. This is the only networking course designed specifically for video surveillance professionals.  Lots of network training...
Powerline Networking For Video Surveillance Advocated By Comtrend on Jun 08, 2018
Powerline networking, using existing electrical wiring, has been around for many years. Indeed, over the years, some video surveillance providers...
H.265 / HEVC Codec Tutorial on Jun 07, 2018
H.265 support has improved significantly in 2018, with H.265 camera/VMS compatibility increased compared to only a year ago, and more manufacturers...
VMS Server Sizing on May 25, 2018
Specifying the right sized PC/server for VMS software is one of the most important yet difficult decisions in IP video surveillance. In the past...
Axis 12MP Stereographic Camera Tested (M3058-LVE) on May 10, 2018
Axis has released the M3058-PLVE, a 12MP sensor, stereographic panoramic camera and Axis' first with integrated IR claiming images "sharp to the...
Last Chance - May 2018 Camera Course on May 03, 2018
This is the last chance to register as the course starts next week. This is the only independent surveillance camera course, based on in-depth...
IP Network Hardware for Surveillance Guide on May 02, 2018
Video surveillance systems depend on IP networking equipment. In this guide, we explain the key pieces of equipment and features, explaining where...
Hikvision DarkfighterX Vs Darkfighter PTZ Tested on Apr 26, 2018
Hikvision has focused on improving low-light performance for PTZs, an area that has traditionally been a problem, even more so than fixed cameras,...
Wireless Networking For Video Surveillance Guide on Mar 29, 2018
Wireless networking is a niche in video surveillance applications, but it can be a difficult one to understand with proper wireless design,...

Most Recent Industry Reports

SimpliSafe Violating California, Florida, and Texas Licensing Laws on Aug 14, 2018
IPVM has verified that DIY security system provider SimpliSafe, founded in 2006 and acquired in June of 2018 at a billion dollar valuation, is...
Cut Milestone Licensing Costs 80% By Using Hikvision and Dahua NVRs (Tested) on Aug 13, 2018
Enterprise VMS licensing can be quite expensive, with $200 or more per channel common, meaning a 100 camera system can cost $20,000 in VMS...
Nortek Sues SDS, Battle Over Unpaid Bill and Cancelled Lines on Aug 13, 2018
Nortek and SDS legal battle continues. As IPVM reported, SDS sued Nortek alleging bribery and antitrust violation. However, Wave fired back at SDS,...
Uniview Intrusion Analytics and VMD Tested on Aug 13, 2018
IPVM's IP Camera Analytics Shootout featuring Avigilon, Axis, Bosch, Dahua, Hanwha, Hikvision created some ill will with a Uniview distributor who...
ADT Employees Protest ADT CEO on Aug 10, 2018
So many ADT employees were so upset with ADT's CEO speech reported on by IPVM, that ADT's CEO was forced to send a mass email to employees to...
Axis / Avigilon Legal Battle Rises on Aug 09, 2018
In what is shaping up to be high-powered, will-not-back-down battle, Axis and Avigilon are squaring off in multiple legal contests. In 2017, IPVM...
Camera Focusing Tutorial on Aug 09, 2018
A camera's focus is fundamental to quality imaging. Mistakes can cause important problems. In this guide, we explain focus issues and proper...
Dahua Ban Response: NOT Chinese Government Owned on Aug 08, 2018
Dahua has responded to the US Congress passing a US government ban on Dahua and Hikvision's products. While Dahua offered the now standard...
Bad Move: ADT Markets Rival Amazon on Aug 08, 2018
Amazon may be lining up ADT as its next victim but ADT is happy to promote Amazon. Amazon has made major moves recently, including acquiring...

The world's leading video surveillance information source, IPVM provides the best reporting, testing and training for 10,000+ members globally. Dedicated to independent and objective information, we uniquely refuse any and all advertisements, sponsorship and consulting from manufacturers.

About | FAQ | Contact