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shropna

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Everything posted by shropna

  1. Why nobody surprised about analog CCTV cameras VULNERABILITY? Just connect any analog monitor, and vualia First of all, protect Yours network.
  2. Mobotix M12 VS Bosch FLEXIDOME HD 1080p HDR. Both recorded JPG compression. http://ubuntuone.com/4m3Qqa3mKsy9XhFErQdOj4 Unzip, then click Player.exe.
  3. So, anyone has experience with that cameras? I need to build system for Police car with dual (front and rear) ANPR cameras. Of course, should work day/naight, etc.... Any suggestions?
  4. I thing, IP CCTV will return to JPG, instead of MPEG*, H2**, etc.... Just leave that standards for cable, satellite, disc TV and teleconferencing systems. What you thing, colleagues?
  5. One interesting document: http://www.iqeye.com/iqeye/H.264_Considerations_III.pdf
  6. shropna

    lightning protection both ends of cable

    westom, great tips. Actually, all lightening protection works as well like soap to protect from AIDS, as example . If we have direct lightening. Best way is avoid current in "loop", caused power lines, not correct grounding, etc..... As an example, surge protector, placed near camera, is grounded to direct ground pole. If we have strong lightening near this place, voltage difference between "center" and "camera" grounding points will be to high, an current will occur to all data lines.... If we not connect surge protection unit near camera, or, do not use different grounding points, current, caused lightening, will not appear. So, "Star" wiring configuration is the main protection. Surge protectors are just "additional" protection....
  7. I'm just should make video clips. Static images can not explain, what i mean.....
  8. What VMS's support this camera? Actually, this manufacturer produce only OEM, without brand name..... But, you can get all SDK for VMS build I'm use Digifort VMS, this VMS supports lots of cameras.
  9. Found something, near "miracle" FullHD 1080P camera, not high price, dual stream, intelligent video analytic possibility (license), with high sensitivity, better, than D1 camera sensitivity.... Videos will come later, please, suggest, where place video.....
  10. Does anyone have experience with this systems? I know just 2 manufactures - Veracity and Xtralis. This is tecnology, suitable only with CCTV systems, where around 99% of system working time is writing to HDD, and aroud 1% is reading from storage.
  11. NDN is not "analog" camera, and will be better, because this minidome use progressive scan, instead of interlaced on analog (LTC) cameras, so, can capture whole resolution picture at one shoot.... Picture quality and sensitivity near the same. ndn 921 cameras also progressive scan, but sensitivity is less, so, you will need more powerfull lighting.
  12. shropna

    Video Matrix Switcher vs IP Switch

    Depends on system. If you build perimeter security - analog cameras and analog matrix is the best. No latency, equipment simple with minimum bugs and failure points, based on long time experience... If you want high functionality and flexibility system - IP "matrix".... Or, can be hybryd system - analog cameras and matrix with encoders with video analytic features to generate alarmas, etc...... Also, do not forhet about system security. Theoreticaly, you can connect from any IP camera point to whole system, and do, what you want..... This is impossible, when you use analog cameras...
  13. This is Sanyo cameras, with Bosch labels
  14. Depends on system. If you will use lots of cameras and one workstation - any switch, depends on speed and PoE requirements. If you build system with lots of users (workstations) at LAN, you should use multicast streams from cameras (servers), so, requirements to sw should include multicast protocols managment (IGMP, PIP, etc.....).
  15. I'm place parts of image in my previous post. Full image can be downloaded from there: https://picasaweb.google.com/lh/photo/KjqOzCJuxbTNeK-v2ZNHjAQpFu9P9UQVAnxMxtu0pf8?feat=directlink But, it looks, you should login to picasaweb, to get full rez picture
  16. Arecont AV10005 with MPL4-10 1/2" 4.5-10mm CS IR Corrected Manual Iris lens https://picasaweb.google.com/lh/photo/KjqOzCJuxbTNeK-v2ZNHjAQpFu9P9UQVAnxMxtu0pf8?feat=directlink Part of image:
  17. The page for the 243 has that option checked, it is jaggedy without it. I think I'm going to open an Axis support ticket to try to get to the bottom of this. Thanks for responding with your experience. Bosch encoders doesnt have 4 cif resolution, when decoding with Bosch decoder (not hardware, but software). Actually, Bosch DECODING work only with 2 cif resolution, so, you will not have interlacing effects De-interlacing is not "easy" work...... http://www.compression.ru/video/deinterlacing/index_en.html
  18. Format, focal length, "speed".... So, where is "lines per millimeter"? Very important parameter for small pixel pitch megapixel cameras....
  19. shropna

    samsung SDN500P camera any good?

    Just old, good camera.....
  20. shropna

    Angry about lenses datasheets.

    "New age" example: But, 650 TVL is not parameter.....
  21. Tamron made excellent lens for SD cameras. But, at this moment, Fujinon MP lenses is more better, than Tamron.....
  22. That's what I was thinking, there is no way to set the min shutter on the camera. I tried turning on the hall lights to no avail. In this case I am only a few feet from the camera, so I end up moving across the field of view pretty quickly. At least one field comes out not blurred, so maybe not so much a slow shutter problem? I was thinking that this may be inherent to analog cameras, if the camera waits 1/60s to shoot the next field in the frame. Some things I've read seem to imply this is what happens, but I wanted to have a clear understanding. I'll try it again with some different cameras this weekend where I can set the min shutter. This is not "long" shutter problem. Look at leg edges - no any blur. Typical "interlaced" picture. Except one thing - place camera "normal", do horizontal, not vertical motion. Then look at snapshoots
  23. I know only few "analog" cameras with progressive scan and interlaced output. As an example: http://www.dallmeier-electronic.com/en/cctv-ip-video-surveillance/cameras/models/box-cameras.html More easy way - IP cameras with progressive scan.
  24. shropna

    inexpensive used camera night comparisons

    Nice, thanks! Took a crack at pulling the specs on those LTC0510 50 IRE 0.032 lux f1.2 LTC0495 50 IRE 0.59 lux / 0.08 lux (Monochrome mode) LTC0620 50IRE 0.31 lux / 0.052 lux f1.2 Lunavision HO-S221 30% video 0.05 lux f.14 Lunavision HO-S321 30% video 0.003 lux f1.4 Samsung 0.05Lux@F1.2 (Color), 0.006Lux@F1.2 (B/W) --------- Amount of light to get 1 lux at sensor f1.0 5 lux f1.2 7.5 lux f1.4 10 lux f1.6 13.3 lux f1.8 16 lux Lunavision cameras is most expensive in this test. But most worse, also..... Bosch not "lie" excellent cameras in real situation. Samsung "lie" (excellent noise reduction), but very good, and cheapest in my comparison company (y)
  25. shropna

    inexpensive used camera night comparisons

    Tamron Megapixel lens not good..... But Tamron SD lens is perfect Starange, but fact.
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