Posts Tagged ‘video cameras’

Seeing in the dark — Infrared Security Cameras

Friday, January 1st, 2010

Darkness is the enemy of security system setups. Unless you have an infrared security camera, as infrared security cameras excel at capturing video in the dark.

Although most security consultants are familiar with an infrared security cameras single drawback: the capture in black and white, many new security personnel do not understand the advantages of using an infrared security camera or when to use one in a security setup.

Simply put, black and white video is better than no video and there are many situations where traditional cameras cannot capture anything.

Many closed caption television security system cameras hinge on having good available lighting. Often times this means that a thousand dollar setup can many times be rendered useless and ineffective by simply removing the light source, by either destroying or disabling the light. In this situation a infrared security camera would make an excellent failsafe. Secondly, many times the lighting necessary to properly secure an outside location would be overwhelming to nearby residents or businesses, draw unwelcome attention, or otherwise be undesirable. This is another situation where a infrared security camera would be very beneficial.

How do Infrared security cameras work? Infrared Sensors (or IR) detect infrared radiation, which is essentially the byproduct of heat. Specifically, electromagnetic radiation has a wavelength longer than visible light but shorter than a microwave, which means that people cannot see it or be damaged by it. Infrared (or thermal) imaging is used in many devises such as smart missiles, night vision goggles, and television remotes. Other scientific uses involve using infrared light to predict the weather or study the formation of stars. Obviously, visible light is not necessary to produce heat, which is why infrared cameras work so well at night.

Infrared cameras come with many different numbers of infrared lights built into the lens. Some have as many as 64 or as few as 6 bulbs, but the number of bulbs is not the only thing to consider. The size of the infrared bulb is important as well. Generally the more infrared light, in both size and number, that a infrared security camera has the farther that you will be able to see with the camera.

When it comes infrared cameras if the cameras has 12 or more bulbs, it was not meant to be used indoors. This is because many flat glossy surfaces can reflect the light back and overwhelm the sensors. A few examples of these types of surfaces include windows, doors, coffee tables, even walls painted with “glossy” paint finishes can wash out an infrared sensor if it has too much light. It is better to know where you will install the camera rather than just assuming that more lights equal a better picture.

In general, infrared security cameras have a specific application in a security system setup: to see in in the dark and thus be a failsafe to your other devices. For more infrared security cameras please see www.security-camera-warehouse.com

Evaluating Your Digital Camera Options

Tuesday, December 8th, 2009

Up to one or two years gone, all cameras except the Polaroid variety, needed film rolls. Choosing a camera used to be pretty simple. You sometimes had a concept as to which type of camera you wanted before you bought one. You had a choice between a simple point-and-shoot, ordinary zoom, and SLR camera. It all ultimately would boil down to the type of camera and your financial position. After you had acquired your camera it was a matter of selecting what kind of roll you loaded into stated one houston newborn photography expert. Advantages of owning an electronic camera over a film camera are plenty of. The biggest advantage is the price factor. With a film camera you have to purchase a film roll which clicks approximately 36 photographs. Once this roll is over you have got to get a new roll. The roll that’s clicked needs to be given to a professional photo studio to develop and print. Developing costs you cash. You also have to make extremely sure that all of the photographs that you click are perfect, if they are not, it is a total waste.

The mad surge for compact digital cameras has started and even people who could not afford to buy one are saving for that precious digicam remarked one houston newborn photographer. To make it a good investment, buyers of digital cameras should make sure they know what they are purchasing and they are purchasing the digital camera that fits their requirements. Neophyte digicam users believe that the bigger the pixel of the camera, the better for them. The truth is, a digital camera’s pixel is only as good as the user’s wants. It suggests select a digital camera pixel depending on your wishes and not just for the sake of buying an electronic camera with high pixel.

I have seen advertisements of digital cameras claiming ‘Mind-blowing 12X zoom. If you are the person who does not understand the technicality concerned in this statement you would be highly impressed by the figure 12X. What the camera could be in truth is an inexpensive 2X Optical zoom camera with a 6X digital zoom, which in very simple terms is truly worthless going by the standard of cameras available today. Then there are those that try and sell you their camera based solely on the word Megapixel. Due to much advertising hype, many today are under the false impression that more the ‘Megapixels’, the better your image quality. You can see advertisers today proclaiming ‘Take dazzling photographs of 8.0 Megapixels with this camera’! A camera of 4 or 5 megapixels will give you far better pictures if other parameters like lens, optical zoom, and color management are better in them.

This is one of the most usually misunderstood ideas of digital cameras. Many makers try to cash in on the misunderstandings that exist per zoom. To many of you a zoom is a zoom. What can be so different in an optical and digital zoom? ‘An optical zoom is good, but at the same time just about everything is going digital today, so a digital zoom should be truly good too’ is what most would think. Fully wrong. The concept of optical and digital zoom can be explained in a straightforward way. With an optical zoom you can get nearer to the object without losing any image clearness. In an optical zoom the lenses move to magnify the topic. A digital zoom will not zoom onto the subject to maintain clarity, but instead it just magnifies the pixels present to give you a bigger image. Employing a digital zoom breaks the image giving it a misty look. As far as possible never use the digital zoom of your camera.

Optical zoom and megapixels should be of prime focus while buying a digicam. But this isn’t all, there are some more minor features you must keep an eye open for while deciding on the electronic camera you will be buying. Unless you’re a pro paparazzo and understand the workings of Scene Modes, White Balance, Shutter Speed, etc . Do not bother about these things. Keep your camera on auto mode and it will take care of all of these settings ( manual settings are still the best, but auto settings are ideal for the casual paparazzo ). If you have selected a particular camera ask the dealer to allow you to try one. Hold the camera and see where the controls are located. They’ve got to be comfortable and easy to use. Make sure that the zoom buttons are handily located because this is something that you will use most often while taking photographs. This feature is very helpful when you have your little youngsters clicking away.

If you don’t want to take the photos yourself, hire a pro. You can find great info here. She is an Atlanta maternity photographer. Also, another great resource is available if you neednewborn photographer houston or anywhere in the US