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

July 2018 IP Networking Course on Jun 16, 2018
The last chance to save $50 on registration is this Thursday, June 21st. Register now and save. This is the only networking course designed...
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,...
Cellular (4G / LTE / 5G) For Video Surveillance Guide on Mar 06, 2018
In this report, we explain using cellular for video surveillance including: 4G vs LTE vs 5G 4G standards 5G future Advantage: Placing cameras...

Most Recent Industry Reports

IPVM Vulnerability Scanner Released on Jun 18, 2018
IPVM is proud to announce video surveillance's first and only cybersecurity vulnerability scanner. This tool allows quickly and simply...
Hikvision Corrects False Cybersecurity Announcement on Jun 18, 2018
Hikvision has corrected a false cybersecurity announcement that claimed a British government-sponsored program endorsed the cybersecurity of...
July 2018 IP Networking Course on Jun 16, 2018
The last chance to save $50 on registration is this Thursday, June 21st. Register now and save. This is the only networking course designed...
The Dumb Ones: PSA's Bozeman On Cybersecurity on Jun 15, 2018
The smart ones are the hundred people who flew to Denver and spent $500+ on a 1.5-day conference featuring Dahua as a 'cyber responsible partner',...
Amazon Ring Launches $10 Monthly Professional Alarm Monitoring on Jun 15, 2018
Amazon's Ring has announced an alarm system with 24/7 professional alarm monitoring for $10 per month, a fraction of the $30+ per month traditional...
Axis Releases First New Access Controller In 5 Years (A1601) on Jun 15, 2018
It has been 5 years since Axis 2013 entry in the physical access control market, with the A1001 (IPVM test). Now, Axis has released its second...
Hikvision 12MP Fisheye Camera Tested (DS-2CD63C2F-IV) on Jun 14, 2018
Hikvision's DS-2CD63C2F-IV is their flagship panoramic camera, with a 12MP imager, 15m integrated IR, smart codec, and more. We tested the 63C2 in...
Four Major Outdoor Camera Install Problems on Jun 14, 2018
Over 140 integrators told us the top four camera installation mistakes that lead to unexpected problems and failures. Their comments often...
Security Sales Course Summer 2018 on Jun 14, 2018
Based on member's interest, IPVM is offering a security sales course this summer. Register Now - IPVM Security Sales Course Summer...
China Public Video Surveillance Guide: From Skynet to Sharp Eyes on Jun 14, 2018
China is expanding its video surveillance network to achieve “100%” nationwide coverage by 2020, including facial recognition capabilities and a...

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