rory

No, IR cut is a filter that physically goes over the chip.

too far for 12DC in this case, need 24VAC, or power closer to camera.

whats the camera's power consumption?

The difference depends of spectral response curve of image sensor and difference in reflection factor of the target. My accurate laboratory test with special calibrated IR LEDs (image sensor=SONY ExView HAD, target= human body) shows what 950nm is 43% in efficiently relative to 850nm. With other image sensors the factor is in the limits of 40-50% Well Im only letting you know field tested results, for 10 years.

approx 20-30% loss at 850nm, approx 50% loss at 950nm, tested in the field.

not quite enough

I normally power PTZs at the camera. The decent brands normally come with their own weatherproof power supply box.

most of the IR I did in the past never used IR corrected lenses and worked just fine. You just have to focus it off a tiny bit to allow for the focus shift, if not using IR lenses.

Looks like it is, if it is pitch dark there and that is Infrared. Its likely just a very cheap Color IR camera.

Use to be when you bought box cameras (for example GE, Sanyo, etc) they would give you the IR Wavelength they are sensitive to. I think it was the Sanyo I used with the 950nm IRs, but GE always listed in the 1000nm range also. Like Extreme used to say, not all cameras are built alike.

cheap cheap color IR > cheap color IR > TDN IR > No IR

I think you misunderstand. Color IR or Digital Day Night = NO IR CUT FILTER is ever placed over the chip, therefore colors are washed out when exposed to Infrared, eg outdoors under sunlight, some also look terrible under indoor lighting. These are the cheaper of the day night cameras, and hence are not considered a True Day Night camera. TDN = Mechanical IR Cut filter, removable during the night, it goes back over the chip in the day. Therefor you get rich colors as the infrared is blocked from entering the chip, and in most cases TDN cameras are generally a much better camera with a more expensive chip and also more sensitive under low light. TDN is normally always a better camera overall, than a comparible model that is only digital day night. BTW both switch over automatically.

i've got the upgrades and full versions here http://www.bahamassecurity.com/downloads/geovision-downloads.asp 7.05 full and 8.## full versions

BTW that error message generally means it cant connect to the device. So far works tested on XP and Vista in Chrome/FF with IE Tabs, and IE8 (not sure about IE9 yet). Which OS and Browser are you using? Shouldn't have any more issues than the default web service, unless you were testing it when I was making changes

Still working on and testing the custom app .. so things might not be 100%. If you use IE9 though make sure compatibility mode is enabled.

it all depends on the application though .. if its just a 10x10 office then a color IR, at 1/10th the cost ... could likely be a better choice if its a narrow back area of a building where exact colors dont matter and its pitch dark .. a color IR with a ton of IR and varifocal lens, at 1/3rd the cost .... could be a better choice

No I dont think so but anything is possible. Otherwise Geo wouldnt normally just up and stop working after so long, legit or not. Need to get the windows event logs, also check the Geo log. Did you do any upgrades to the systems, like Windows Updates? Any hardware changed on the system, anything?

That said .. EVEN BETTER would be separate Color and BW cameras.

TDN (AKA ICR) is always better.

Sorry that would actually be 2.0.

Additionally I have a custom Web Service for Dahua DVRs I am working on, again it uses the same activeX (will make my own if I get some free time), in this case I have an entry page which has the link to the ActiveX installer, and therefore you have the chance to run that first before the page actually loads the ActiveX at all. It is still one single page though, but if there is no form post then the entry page will show and you enter your details. One page only so you only need to add that to the IE Tab Filter in Firefox/Chrome's IE Tab Plugin. Seriously all this stuff to install might as well use a full blown desktop software LOL. ActiveX and then Plugins ... Ok but yeah this runs in a browser .. anyway moving along .. It uses a mix of Classic ASP and Sessions, and plenty of Javascript as usual - although much more minimal compared to the default Dahua Web Service and if you view the source code, much neater and organized. Its all written from scratch. I originally started writing it in client side vbscript (as I am king with that LOL) but even though it uses IE in IE Tab, those browsers still wont recognize the scripts. It lets you enter an IP and login details, select a Stream type and MultiView, and then it will load all cameras automatically. It has a couple resize features and a popup I still need to convert from my RTSP app to this one, a drag to resize I am currently fixing to work in IE (works fine in FF and Chrome but disabled it for now), and ofcourse the same Search, Alarm, and Config features as in the default web service as those are built into the ActiveX. Im working on the part of the entry form now that lets you select which camera goes where, meanwhile it just loads all cameras regardless of the view selected. Probably do alot more to it as I get free time, however I also have articles to write and desktop software to update. Meanwhile here is that link .. http://www.bahamassecurity.com/dhvideo/

Its a new ActiveX from 2.608 firmware that is hosted on my website - when you hit the page you would download it as usual. Then the Web Service on that page uses that activeX. The activeX is version 2.1.7.35, which is from DVR firmware version 2.608 from an LE-A DVR. Its the default Web Service app that came from the DVR as well. The web service is modified to allow users to enter their own DVR IP Address. Otherwise it is the same general Dahua Web Service, in this case 2.20. And yes it will allow one to use all the features of the new ActiveX while connected to a DVR using the older firmware. But this will only work if you actually have a Dahua based DVR.

To keep the price down by about $50-100 less, some OEMs will buy cameras without TDN. Therefore its just a digital day night, or Color IR.

fake WDR, not true WDR.

As far as I know there is no 2.608 update for that model (LE-AS/AN), you may find a 2.606 update on the QC site, but it will unlikely be 2.608, which fixes this issue. Otherwise, settings generally remain the same during the firmware upgrade, except the encode settings normally. From 2.60#.####.# to 2.608 the encoding is different so those are replaced with defaults, and would not be able to import the config in that case. Thats one of the main issues with that entry level unit, lack of latest firmware updates. But again, the QC-444 will not take the 2.608 firmware, at least not the one I have listed which is only for some other models.