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shropna

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Everything posted by shropna

  1. Hm. This is the simple calculations.... Just compare pixels quantity But this is not true Optical resolution for megapixel cameras is more difficult issue, then the pixels quantity
  2. It looks, like on night mode recorder "trying" catch color signal from cameras. You can use "color burst" function (if available) on cameras in night mode, or just "reduce" cameras resolution (high frequency signals) from camera just by adding picofarade range capacitors in parallel of video signal.
  3. shropna

    Arecont FAIL

    "Nice" looking job place is not quality guaranty
  4. Thats the main You can setup Mobotix at neccesary situation, but cannot setup to light changes.....
  5. But that is not dynamic range If you can see colors of flashers or flasher mechanical form, thats will be dynamic range. Now i see only big white "dots" at flasher area.... "Washed out" can be due to other cameras light control settings....
  6. No, you not right. Just compare "day" pictures, and look, for example to cars roofs and windscreens. On Sanyo image everything ok, on Mobotix - that parts are over-lighted, no details. That means, dynamic range of mobotix is worse.... On your film i cant see any info about "better" dynamic range, just lamps flashing, and that areas are over-lighted (no information about different red and blue colors, looks just like a white flashers.... Better examples, what i mean:
  7. Milestone site now works very slow..... Works with USB camera on my PC
  8. That is not true Sorry, dont have Arecont at that moment, but in comparison with Mobotix M12
  9. Exacq software (runs on Ubuntu distribution, but about $150 per camera...), Sanyo HD cameras (2100 2300 or 3100 3200) Sanyo cameras has more better dynamic range, in comparison with Arecont, for example...
  10. shropna

    Arecont FAIL

    "Russian equipment, American equipment - all made in Taiwan!"
  11. It looks, that you have ground loop problems..... http://www.fmsystems-inc.com/manuals/GNDLOOPart.pdf http://www.epanorama.net/documents/groundloop/video_isolation.html
  12. Encoders can control PTZ, if you will choose PTZ option control in encoders COM ports setup. But. If you control PTZ from DiBos software, COM ports is set to "transparent" mode, so, encoders just repeats PTZ control commands from control software. So, control PTZ via Explorer and soft, at the same time is not possible....
  13. For just transmit video via IP i just use Hikvision encoders and decoders. But. Is this the solution? I thing, if you want keep existing cameras, just put them to encoders, but do not use any decoders. Just use some of IP VMS....
  14. Rory, you spoke a lot... Any of you needs (posted previous) can be resolved with Bosch Video Management System (BVMS) but expensive.... But for coax to IP : http://www.mobotix.com/other/Products/Mx2wire Also, all mobotix line can help you.
  15. shropna

    Lens quality

    Of course, small pixel pitch is the larger factor, than lens aperture, but this is very close really Just show me more megapixel cameras with large pixels, except "exotic" like Avigilon, Lumenera.... Also, lens manufacturers do "auto-iris" lenses with neutral light filters to reduce aperture instead of just mechanical aperture....
  16. shropna

    Lens quality

    And, simple picture about lenses aperture and imager pixel size:
  17. shropna

    Lens quality

    What about diffraction effects on lens with "smaller" aperture? Just one of examples: http://www.conent.com/ConAdv/Encyclopaedia/Photography/CNQ_CAPhotography001.asp This is not CCTV site, but physic is the same... It looks, if you choose lens with smaller aperture, you will have more deep focus. But.... When you chose smaller aperture, you will have less optical resolution at "ideal" focus distance.
  18. shropna

    Lens quality

    Think about difference between Photo lenses and CCTV lenses. Difference is just in CCD or CMOS imager size Avigilon uses large size sensors with large pixels, so, lens optical resolution less sense...
  19. shropna

    fiber optic or RG6???

    If you has money for first step, use fiber (y) About maintenance - with fiber you will not got any lightening problems, thats the main thing. Second, fiber transmission widely used for all types of signals, so, you can use that lines not only for analog cameras transmission.
  20. The Axis P 1346 can do this with stream profiles. This is one of the reasons I was asking about taking advantage of this. The same situation with Sanyo HD line cameras......
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