i need to know how may lux is good for a security cameras  \nand how dose lux work?
218051
I guess 'moonlight' might be nice for security... tech explaination follows:\n\nThe lux (symbol: lx) is the SI unit of illuminance. It is used in photometry as a measure of the perceived intensity of light. In English, "lux" is used in both singular and plural[1].\nOne lux is equal to one lumen per square metre.\nIlluminance Abbr.   Example\n0.00005 lux or 50 µlx  Starlight\n           1 lux    Moonlight\n400 lux  A brightly lit office\n400 lux  Sunrise or sunset on a clear day.\n1000 lux or 1 klx  Typical TV studio lighting\n1000 lux or 1 klx  Approximate minimum level required to reset the biological clock in humans\n32000 lux or 32 klx  Sunlight on an average day (min.)\n100000 lux or 100 klx  Sunlight on an average day (max.)\n\nLux versus lumen\n\nThe difference between the lux and the lumen is that the lux takes into account the area over which the luminous flux is spread. 1000 lumens, concentrated into an area of one square metre, lights up that square metre with an illuminance of 1000 lux. The same 1000 lumens, spread out over ten square metres, produces a dimmer illuminance of only 100 lux.\nAchieving an illuminance of 500 lux might be possible in a home kitchen with a single fluorescent light fixture with an output of 12000 lumens. To light a factory floor with dozens of times the area of the kitchen would require dozens of such fixtures. Thus, lighting a larger area with the same number of lux requires a larger number of lumens.\n\nRelationship between illuminance and power\n\nIlluminance is not a direct measure of the energy of light, but rather of the illumination it provides as perceived by the human eye. Thus, the conversion factor varies with the wavelength composition or color temperature of light. At 555 nm, the middle of the visible spectrum, one lux is equal to 1.46 mW/m².
419636
use this\nhttp://webplaza.pt.lu/~rpetges/windows/luxdsl/luxdsl.html
520829
those thermal imagers are state of the art. you do not have enough money to develop a product to outsmart the product. Stay away from crimes that would require you to not show up on a thermal imager
101566
see film scanners:\nhttp://www.bhphotovideo.com/bnh/controller/home?O=breadCrumb&A=search&Q=&ci=1151
178642
visit your webcam's company website...\nhttp://www.sabrent.com/products/index.htm
285591
very true.  case in point, I work retail and i have this lady come in asking if we sale Sony camera batteries.  I tell her "yes" and show her the ten or so batteries available.  I ask if she can give me any more information, and she asks to see the cameras we currently sale.  But of course her three year old camera isn't there, so she leaves.\nAsking or providing more information is a good thing.
129050
It takes several steps for a digital camera to take a picture. Here's a review of what happens in a CCD camera, from beginning to end: \nYou aim the camera at the subject and adjust the optical zoom to get closer or farther away. \n\nYou press lightly on the shutter release. \n\nThe camera automatically focuses on the subject and takes a reading of the available light. \n\nThe camera sets the aperture and shutter speed for optimal exposure. \n\nYou press the shutter release all the way. \n\nThe camera resets the CCD and exposes it to the light, building up an electrical charge, until the shutter closes. \n\nThe ADC measures the charge and creates a digital signal that represents the values of the charge at each pixel. \n\nA processor interpolates the data from the different pixels to create natural color. On many cameras, it is possible to see the output on the LCD at this stage. \n\nA processor may perform a preset level of compression on the data. \n\nThe information is stored in some form of memory device (probably a Flash memory card). \n\n\n\n\nmore Info refer\nhttp://electronics.howstuffworks.com/digital-camera.htm
536535
Hypercam is powerful video capture software that is used to record AVI movies (Audio-Video Interleaved) directly from the monitor, for software presentations, software training, demos, tutorials, and fun! Hypercam supports text annotations, sound, and screen notes (excellent for creating automated software demos!). Sound from your system microphone is also recorded. You can also select Frame rate and compression quality prior to video capture.  \n\nPlease note that Hypercam is not intended for re-recording of other video clips from the screen (e.g. playing in Media Player, RealVideo, QuickTime etc.), but rather for creating regular software presentations, tutorial, demos etc. If you still want to try it for re-recording other movie clips, you need some other software known as 'QuickTime 3', downloadable from www.apple.com/quicktime/\n\nYou will get a tool icon after it is installed. By clicking on this icon, you can activate for your use.\n\nIt is not a spyware, hence it does not get installed automatically. I am not sure if some hacking expert has developed a trick to send it as 'attachment'. However, the AVI files created by the PC user can be watched stealthily by somebody using a spyware, similar to the other files, by sharing your PC.\n\nYou can confirm the presence of spywares in your PC by scanning with an anti-spyware, some of which you can download from the internet. A reliable free anti-spyware is 'Spybot'. \n\nHope, this much information is useful?
210496
I just tried it on my messenger, first time, it knew my camera, so you have to load the software from logictech, that will put the right driver on the system.  With the camera then hooked up, go to messenger, click on video call, and a wizard will then walk you thru, you should see your camera.
187901
A lot of webcam programs are buggy, have tried any other ones ?? I'v tried about 15 different ones and only a few worked well and few were awful..
575511
I'd check the brightness/contrast settings on your monitor aqnd camera.  After that check in your software for the same...
202587
Don't worry about brands of lights. Light is light, and it doesn't matter who made the instrument. What you really need to worry about is how many lights you can get, what you're pointing them at, and who's going to be in charge of setting them up? Since you're working with little/no budget you have to make the most of your resources. Have you considered using *no* lights? If you've never heard of Dogma films, then take a while to read about them.\n\nhttp://www.google.com/search?q=dogma+95&start=0&ie=utf-8\n\nThe Dogma films prove that quality movies can be made with no outside lighting at all, and it's definitely worth a look.\n\nIf you're determined to use outside lights, then you're going to have to get them from somewhere. Borrowing or renting is the way to go, as buying them will be prohibitively expensive. If you go the rental route, be sure to mention that you're a student / indie filmmaker. Many rental houses will cut you a break now in hopes of keeping your business later.\n\nThe next key thing to worry about is who's in charge of the lights. A competent cinematographer can do more with four well-placed lights than an amateur with a truck full of equipment. Get someone with experience shooting on DV, and take full advantage of what they know. Make sure they can shoot *your* kind of movie, as well. Someone who's shot twenty horror films and nothing else might be completely useless if you're making a romantic comedy.\n\nThere are a million books on cinema lighting, and I can't really say that there's one best one out there. If you don't have much of a background in lighting then the most basic place you should start is reading up on three-point lighting.\n\nGoogle for "three-point lighting"\n\nhttp://www.google.com/search?q=three+point+lighting&start=0&ie=utf-8\n\nA clear explanation of 3-point for computer-generated scenes. (It's still the same theory)\n\nhttp://www.andrew-whitehurst.net/3point.html\n\nLast but not least, read a little about color temperature, color correcting gels, diffusion, and the tools you need to cut & shape lights (flags, silks, nets, cookies). Those fine touches are what separate amateur lighting (which looks doubly worse on video) from professional level work.
637507
There are a few cameras that almost meet your requirements. Unfortunately, none of them have a battery option included, but they generally run off on DC which means the addition of a battery pack is possible.\n\nThe first link is not only low light but also infrared. The others tend to have a low light option.\n\nSee links in source(s):\n\n--\nsf
520576
In urban areas it's more than 300 times; maybe not 300 cameras. I cannot leave my house without passing under one that I know is a dummy; but there are real ones a few steps further on. I can't walk into a shop or a bank or a post office without being recorded.\n\nAnd there are special cameras to record license plates for congestion charging, for speed enforcement, for bus lane enforcement. There are cameras in the buses to record yob behavior and at intersections to check for traffic problems.\n\nMandatory ID cards are next.
203609
can I have an invisible camera too? I'd show my husband pictures of the crap he's doing but denies! haha gotcha now buddy!
220289
Personally, I use trillian, it's an instant messanger program. It allows what is called tabbed windows so each buddy list shows up in a single window, this helps. If you want to go to live chat which I also use, Get a headset mic this helps eliminate a lot of background noise. Web cams I would go with logitec they are awesome excellent quality. Down sides - static sometims like a really bad cellphone, delays, sometimes don't work with certain programs. web cam's always have a delay fster speed connection and your computer speed all of that factors into the length of the delay. I use Skype it allows even phone calls to land lines and is crystal clear though I haven't as yet tried the video function it works well and even has a conference feature though I believe that does cost.
521017
Assuming your image is transparent, you would just use a projector-type bulb or some other light souce which has a relatively small focal spot (definitely not a frosted bulb)\n\nIf the image source is not transparent, you'll need to add a large lens and a box to put it, the image, and the light into in order to make a "camera obscura".  You can write me for more details if interested.