Cctv Yard
Security Camera Night Vision Types – Ir or Dss
Many of our customers ask for Infra Red Night Vision Security Cameras. We believe that this is mainly due to the over-frequent use of the term in internet commerce. The main goal you want to reach is : Identification of suspects.
Infra Red LEDs
These days CCTV Dome Cameras are often equipped with in-built infra red LEDs. These point to a centered area in the camera view and illuminate only that area. Any activity in the border or corner areas of the camera view will not be illuminated. Also – CCD Image Sensors of most low cost cameras calculate their overall light sensitivety and thereby the subsequent opening or closing of the auto iris or shutter, by the overall illumination of the camera view. Since the border areas will be completely dark, the iris will open wider in order to receive more light exposure onto the CCD chip.
What now happens is not rocket science; the suspects face, facing the camera in the center view, which is directly illuminated by the infra red already, reflects far too much light right back into the wide open iris. The face will be over-illuminated and not identifyable.
You think that this is exaggerated? The majority of all footage of low cost Security Cameras with inbuilt infra red, after handing over to the police is not being used. Experts at the police department can see at a glance whether CCTV footage has a chance to prevail in court or not.
DSS Night Vision
Another possibility is DSS, which stands for Digital Slow Shuttering. The intelligent electronic in the camera chip will digitally reduce the shutter speed, whilst at the same time avoiding many of the negative side effects of the analog version of doing this. With this technology the existing light can be magnified up to fifty times and higher.
Practically this means that there needs to be ‘some’ light in the area, or distant light shining into the area. With better Security Cameras moon light and sometimes even star light will be sufficient.
For installers to be on the safe side when quoting and commiting to certain abilities of the system; I recommend to use DSS night vision cameras, as long as there is any light source like a street light etc. within 100 yards.
About the Author
Christow Anderson is an experienced Security Consultant in Scotland and has been in charge of security camera system design at a leading UK firm.
Yard CCTV
|
|
LOT OF 5 CCTV WATERPROOF COLOR HOME SECURITY SPY ZOOM CAMERA WARNING YARD SIGNS $7.75 |
|
|
LOT OF CCTV HOME SECURITY SURVEILLANCE CAMERA SYSTEM WARNING YARD SIGNS+STICKERS $11.50 |
|
|
2 CCTV SECURITY WARNING YARD SIGNS & STAKES with 4 FREE SECURITY CCTV STICKERS $16.99 |
|
|
HOME SECURITY VIDEO SURVEILLANCE SPY CCTV VIDEO CAMERA SYSTEM WARNING YARD SIGN $4.76 |
|
|
WARNING CCTV PRIVATE VIDEO SPY SURVEILLANCE CAMERAS RECORDING YARD PROPERTY SIGN $8.85 |
|
|
LOT OF WATERPROOF CCTV SECURITY VIDEO CAMERAS IN USE SYSTEM WARNING YARD SIGNS $12.95 |
|
|
NEW! FAKE SECURITY CCTV VIDEO WARNING YARD SIGN 9″ PVC $5.95 |
|
|
NEW CCTV SECURITY YARD SIGNS $0.99 |
|
|
HOME SECURITY CCTV YARD SIGN with STAKE & 4 FREE CCTV WARNING DECAL STICKERS $8.99 |
|
|
LOT CCTV SECURITY SPY CAMERA PLASTIC WARNING YARD SIGN $6.95 |
|
|
HOME SECURITY CCTV YARD SIGN & METAL STAKE with 4 FREE CCTV DECALS $9.99 |
|
|
LOT OF 2 CCTV SURVEILLANCE BURGLER YARD HOME SECURITY CAMERA ALARM WARNING SIGNS $6.25 |
|
|
1 SECURITY SPY PROTECTION CCTV CAMERA WARNING FENCEPOST COLOR YARD COUNTER SIGN $8.95 |
|
|
Home Security System CCTV Camera Alarm Yard Sign Sale! $5.95 |
|
|
Security Camera Yard Signs Deal 1.50 Flat Ship Spy CCTV $5.90 |
|
|
Security Camera Yard Sign Deal 1.50 Flat Ship! Spy CCTV $5.90 |
|
|
LOT OF 2 CCTV SECURITY SPY CAMERA PLASTIC WARNING YARD/STORE/COUNTER FENCE SIGNS $6.25 |
|
|
LOT OF SECURITY SPY CCTV VIDEO CAMERA YARD WARNING SIGN $6.95 |
|
|
VIDEO SURVEILLANCE CCTV YARD SIGN with STAKE and 4 FREE CCTV WARNING STICKERS $9.99 |
|
|
CCTV DVR SECURITY YARD SIGN & STAKE with 4 FREE WINDOW & DOOR DECALS NEW $8.99 |
|
|
5 SURVEILANCE SECURITY HOME CCTV CAMERA WARNING YARD SIGNS+4 WINDOW STICKERS $8.95 |
|
|
2 CCTV SECURITY WARNING YARD SIGNS & STAKES with 4 FREE SECURITY CCTV STICKERS $16.99 |
|
|
Security Camera Yard Sign w Post & Dozen Stickers CCTV $18.95 |
|
|
2 VIDEO CAMERA NIGHT VISION CCTV YARD SIGNS with STAKES & 4 CCTV WARNING DECALS $17.99 |
|
|
CCTV DVR SECURITY WARNING YARD SIGN & 4 CCTV WINDOW & DOOR DECALS NEW $9.99 |
|
|
3 Security Camera Yard Signs w Posts & 12 CCTV Stickers $39.00 |
|
|
VIDEO SURVEILLANCE YARD SIGN and STAKE with 4 FREE CCTV WARNING STICKERS $10.99 |
|
|
CCTV DVR SECURITY YARD SIGN & STAKE with 4 FREE WINDOW & DOOR DECALS NEW $9.99 |
|
|
Logitech WiLife Digital Video Security–Outdoor Master System Camera $136.99 Monitor entrances and driveways with the Logitech® Outdoor Video Security Master System, a revolutionary video surveillance system you can install in 15 minutes. The Outdoor Camera is weatherproof and waterproof, ensuring year-round use even in harsh conditions.Itâ?TMs all plug and play. Using innovative HomePlug┢ technology, the Logitech® Outdoor Video Security Master System transmits … |
|
|
Panasonic Wireless Network Camera and Pet Cam (BL-C20A) $199.00 Box Contents: Wireless/Wired Network Camera, bracket, power supply, mounting hardware, CD-ROM, software and instructions. There’s a wise saying, “Be safe rather than sorry.” The Panasonic BL-C20A Wireless/Wired Network Camera is designed to help you keep watch of anything inside your home using your PC. Use it to view your children or the new baby while you sit in another room. This color surveil… |
|
|
2 Red House Alarm Security Signs & 6 House Alarm STATIC CLING Decals Shield Design $10.95 This is an excellent deterrant for intruders. The matching sign and sticker set sends a strong signal that this is not the place to mess around with!… |
|
|
2 House Alarm Security Signs & 6 House Alarm Decals Black PACM $10.95 This is an excellent deterrant for intruders. The matching sign and sticker set sends a strong signal that this is not the place to mess around with!… |
|
|
Lorex LIVE SD9 Wireless Digital Security System – LW2902 $313.36 Finish:Black Features: Ultra digital wireless technology for excellent video and audio quality 9′ LCD with built-in wireless receiver and Secure Digital Card recorder Motion detection, scheduled, and manual start/stop recording options Date stamped recordings VGA or QVGA resolutions View in single camera or quad modeexpandable to up to four cameras Two-way audio intercom Includes two colo… |
|
|
VideoSecu 1000 Feet Cat 5e Cable 4 Pair 24 AWG UTP UL Pure Copper Ethernet Network Cable 1RT $74.89 VideoSecu brand 1000 ft CAT5 cable. Please report to Amazon.com if the cable you received does not bear VideoSecu logo. Unshielded twisted pair (UTP) cat 5e cable, 1000ft in easy pull box. It is ideal for high-end solutions such as Gigabit Ethernet, or digital CCTV cameras installation utilizing Cat 5e-type cable. This cable consists of 4 unshielded pairs of 24 AWG solid bare copper conductors, wh… |
|
|
Swann DIY Security Camera (Color) $24.61 COLOR VIDEO CAMERA WITH AUDIOLENS: 6.0MMALL PURPOSE SECURITY CAMERA FOR HOME OR BUSINESSHIGH-QUALITY COLOR IMAGES: 1.5 LUX ILLUMINATIONBUILT-IN MICROPHONEUP TO 380 TV LINES RESOLUTIONBRACKET FOR WALL/CEILING MOUNTINGINCLUDES 15-FT A/V CABLE & BNC CABLEUPC : 814282005031Shipping Dimensions : 8.80in X 5.70in X 2.70inEstimated Shipping Weight : 0.8159… |
|
|
Westek TM11DOLB Outdoor Daily Timer with Grounded Outlet, Black $10.14 Westek’s TM11DOLB One-Outlet Outdoor Daily Timer allows you to control the power to garden lights and lawn devices up to 48 times per day. This efficient outdoor daily timer includes a clear rain-tight door that preserves the life of your timer while guarding against weather.One-Outlet Outdoor Daily TimerAt a Glance:Includes daily 24 ‘on/off’ settingsFeatures a rain-tight designAccepts one 3-prong… |
This entry was posted on Friday, June 6th, 2008 at 8:55 am and is filed under Uncategorized. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.