Testing 'Megapixel' Analog Camera

By: Derek Ward, Published on Mar 26, 2014

Megapixel analog sounds like a contradiction in terms. 'Analog' by definition, or at least in common use, is constrained by 60+ year old NTSC / PAL specifications and cannot be 'megapixel.'

However, now manufacturers are starting to incorporate megapixel sensors into analog cameras. While the cameras must output NTSC / PAL analog, the imagers are capturing megapixel.

Many argue that this is nonsense, that there can be no image improvements and that it is simply manipulative marketing.

They are wrong.

We bought a 900TVL camera and tested it alongside our analog resolution setup (including 450TVL, 600TVL, 700TVL, 960H, etc.) matched up against true 1.3MP and 2MP IP cameras.

900TVL cameras delivered a clear improvement in image quality compared to all of the other analog cameras.

Questions we examine inside, with image comparisons:

  • How much better quality was 900TVL compared to 960H, 700TVL and 600TVL cameras?
  • What was the impact in bandwidth consumption?
  • How did quality vary between night and day?
  • How did 900TVL match up against HD / MP IP cameras? 
  • How did performance vary between moderate (~20') and wide (~40') Field of Views?
  • What should you use for specific applications?
  • Key Findings

    • The "mega pixel" analog camera (900 TVL) beat all other analog cameras tested (450,600,700,960H/700 TVL).
    • 900 TVL reduced bandwidth, improved image quality, and low light performance compared to the 960H.
    • IR performance of the 900 TVL was strongest amongst the analog cameras tested, with the lowest amount of artifacting and gain in the scene.
    • A "mega pixel" analog camera is unable to produce the same level of detail that a megapixel IP camera in full light, dark, and outside scenes (especially in wide scenes).
    • A 900 TVL camera connected to a D1 DVR produces significantly lower image quality than connected to a 960H DVR.
    • Bandwidth consumption of the 900 TVL was ~2x lower than the 720p IP camera, and ~8x lower than 1080p. Also, 900 TVL consumed less bandwidth than the 960H/700TVL analog camera, our theory being that the 900 TVL image is cleaner than 960H one, resulting in less demanding encoding for the same pixel count.

    Recommendations

    The big challenge in deciding what to do is that 'megapixel analog' requires both new cameras (i.e., 900 TVL / 1.3MP sensor ones) and new recorders (960H) to deliver the potential quality improvements.

    Get Notified of Video Surveillance Breaking News
    Get Notified of Video Surveillance Breaking News

    The main attraction is that these cameras and recorders are relatively inexpensive (the MP analog one is ~$60 each, a 4 channel 960H recorder is ~$150, plus HDD, total ~$500 compared to ~$700 for a 4 channel MP IP kit).

    If each camera is only going to cover a narrow FoV of 10 feet or less, with a low camera count and simple needs, 900TVL looks to be a better choice than IP MP and a meaningful upgrade over moderately less expensive traditional camera counts.

    "Mega Pixel" Analog vs. Analog

    For reference, this image illustrates the approximate 18' FOV for all cameras.

    First we shot out the 900 TVL analog camera to the 960H/700TVL, and 600 TVL analog cameras.

    900 TVL vs. 600 TVL and 960H/700TVL Analog Cameras

    Starting with 600 TVL vs. 960H/700TVL vs. 900 TVL, we can see that the 900 TVL analog camera outperforms both the 600 TVL and 960H/700TVL cameras. Line 5 of our test chart is legible, while both the 600 TVL and 960H/700TVL cameras are able to capture lines 3 and 4. Also, our subject's face in the 900 TVL image is clearly the most detailed, with more detail visible on his eyes, hair, and mouth.


    In a dark scene, with IR on, the 900 TVL analog camera is top performer against the 600 TVL and 960H/700TVL, with low amounts of visible gain and artifacting present, while being able to discern line 4 of our test chart. Both the 600 TVL and 960H/700TVL cameras have high amounts of artifacting present, and the 960H/TVL appears to wash out our test chart with IR illumination.

    "Mega Pixel" Analog vs. Mega Pixel IP

    Next, we comparing the "mega pixel" (900 TVL) analog camera to a 720p and 1080p IP camera, and take note of the difference between them, if present.

    900 TVL vs. 720p and 1080p

    We moved onto testing the top analog performer (900 TVL) to a 720p and 1080p IP camera. Although performance is good on the 900 TVL analog camera, it does not surpass the 720p or 1080p cameras, which can distinguish characters on lines 6-7 of our test chart.

    The same is true in low light with IR on, with both HD cameras providing more detail:

    960H vs. D1 Encoding

    While there are no claimed DVR's that are or are not compatible with the 900 TVL analog camera, users should note that connecting a "mega pixel" analog camera to a lower resolution DVR will create gaps in image potential and clarity. In the image below, this is the same 900 TVL analog camera, but connected to both a 960H DVR and D1 DVR.

    In the comparison below, past line 3 in the D1 DVR image is illegible, and our subjects face is clearly more pixelated.

    Outside Parking Lot

    Finally, we took the cameras outside, allowing for a larger testing FOV. Below is the FOV we used for testing.

    900 TVL vs. 960H/700TVL

    With a 40' horizontal field of view, images from both analog cameras are pixelated and noisy. However, the 900 TVL camera is able to distinguish our subject face and a few characters on our test chart more than the 960H/700TVL camera.

    900 TVL vs. Mega Pixel IP

    Similar to our indoor scene, the 720p and 1080p clearly perform stronger than the 900 TVL analog camera, with our subject's face and lines 2-3 on our test chart more visible.

    Walking across the scene, our subject's profile in the 900 TVL image has strong artifacting, and it is difficult to obtain any useful details, such as clothing or hairstyle.

    With our subject walking towards the cameras, the 900 TVL camera still has difficulty producing a clear image of our subject, while the 720p and 1080p cameras can identify few facial features and apparel detail (such as the grey stripe on our subjects jacket).

    Bandwidth Comparison

    We tested bandwidth in both full light and dark scenes with IR on. The chart below compares bandwidth consumption on all cameras. We gauged bandwidth for the analog cameras based off the RTSP stream bit rate from the QT524 4-channel 960H DVR to Exacq. A Q of 28 was used for all cameras, with FPS set to 10. Measurements are based off Mb/s.

    Overall Resolution Comparisons

    For those interested, we have compiled the entirety of the analog and megapixel shootouts into one. In full light:

    In the dark:

    Methodology

    All cameras were tested using default settings.

    These are the camera models used in this test:

    • Q-See QM6006B 600 TVL analog bullet
    • Q-See QM9901B 900 TVL analog bullet
    • Q-See QM9702B 960H/700TVL analog bullet 
    • Q-See QCN7001B 720p IP bullet 
    • Avigilon 2.0W-H3-B01 1080p IP bullet camera

    DVRs used:

    • QT524 4-channel 960H DVR
    • QT534 4-channel D1 DVR

2 reports cite this report:

Axis vs Hikvision vs Sony Encoder Test on Mar 18, 2015
In this report, we share test findings of three popular four port analog SD encoder models: Axis P7214 [link no longer available] Hikvision...
The Worst HD Quality Camera Ever (Samsung 1280H) on Oct 15, 2014
Samsung, what are you doing? Their new 1280H offering significantly stretches video and is one of the most bizarre offerings we have ever...
Comments (34) : Members only. Login. or Join.

Related Reports

Sunell Panda Cam Body Temperature Measurement Camera Tested on May 14, 2020
Sunell is far less well known than its gargantuan domestic competitors Dahua and Hikvision but the company's 'Panda Cam' is going head to head...
Video Surveillance Cameras 101 on Feb 25, 2020
Cameras come in many shapes, sizes and specifications. This 101 examines the basics of cameras and features used in 2020. In this report, we...
Masks Cause Major Facial Recognition Problems on Feb 24, 2020
Coronavirus is spurring an increase in the use of medical masks, which new IPVM test results show cause major problems for facial recognition...
Repositionable Multi-Imager Camera Shootout - Avigilon, Axis, Dahua, Hanwha, Hikvision, Panasonic, Vivotek on Jun 19, 2019
Repositionable multi-imager cameras are one of the fastest growing segments in video surveillance, with a slew of new offerings being recently...
Covert IP Camera Shootout - Axis, Hanwha, Hikvision, March, Vivotek on Mar 20, 2019
Covert cameras were one of the last holdout areas for analog cameras. However, in the past few years, IP / HD covert cameras have become...
4 Most Difficult Camera Installs (Statistics) on Jul 12, 2018
Heavy housings, cumbersome brackets, heavy ladders required, and tricky field of view requirements will cause difficulties no matter the camera...
Genetec Clearance Face Detection / Redaction Test on May 14, 2018
Privacy regulations such as GDPR (EU Public Privacy), HIPAA (US Medical Privacy), and FERPA (US Student Privacy) are driving video surveillance...
Next Gen 5MP / 6MP Camera Shootout - Axis vs Dahua vs Hanwha vs Hikvision on Feb 28, 2018
Many manufacturers have released new generation 5MP / 6MP cameras that tout super low light, WDR and other features historically typical in 1080p...
IP Camera Manufacturer Compression Comparison on Nov 27, 2017
Despite the use of standards-based video compression (H.264/H.265), our tests show that default image quality settings for different manufacturers...
Panoramic: Fisheye vs Multi-Imager Usage on Jun 09, 2017
Panoramic cameras are a growing trend within video surveillance. The two main options are fisheye cameras using a single imager with an ultra-wide...

Most Recent Industry Reports

Verkada: "IPVM Should Never Be Your Source of News" on Jul 02, 2020
Verkada was unhappy with IPVM's recent coverage declaring that reading IPVM is 'not a good look' and that 'IPVM should never be your source of...
Vintra Presents FulcrumAI Face Recognition on Jul 02, 2020
Vintra presented its FulcrumAI face recognition and mask detection offering at the May 2020 IPVM Startups show. Inside this report: A...
Uniview Wrist Temperature Reader Tested on Jul 02, 2020
Uniview is promoting measuring wrist temperatures whereas most others are just offering forehead or inner canthus measurements. But how well does...
Dahua USA Admits Thermal Solutions "Qualify As Medical Devices" on Jul 02, 2020
Dahua USA has issued a press release admitting a controversial point in the industry but an obvious one to the US FDA, that the thermal temperature...
Access Control Online Show - July 2020 - With 40+ Manufacturers - Register Now on Jul 01, 2020
IPVM is excited to announce our July 2020 Access Control Show. With 40+ companies presenting across 4 days, this is a unique opportunity to hear...
Hanwha Face Mask Detection Tested on Jul 01, 2020
Face mask detection or, more specifically lack-of-face-mask detection, is an expanding offering in the midst of coronavirus. Hanwha in partnership...
UK Government Says Fever Cameras "Unsuitable" on Jul 01, 2020
The UK government's medical device regulator, MHRA, told IPVM that fever-seeking thermal cameras are "unsuitable for this purpose" and recommends...
Camera Course Summer 2020 on Jun 30, 2020
This is the only independent surveillance camera course, based on in-depth product and technology testing. Lots of manufacturer training...
Worst Over But Integrators Still Dealing With Coronavirus Problems (June Statistics) on Jun 30, 2020
While numbers of integrators very impacted by Coronavirus continue to drop, most are still moderately dealing with the pandemic's problems, June...
FLIR Screen-EST Screening Software Tested on Jun 30, 2020
In our FLIR A Series Test, the cameras' biggest drawback was their lack of face detection, requiring manual adjustment when screening each...