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When setting up a home security surveillance system there are three components you need to consider:

• cameras
• monitors
• recording devices

Let's look at these in reverse order. These days you have lots of options when it comes to deciding how to record the video feed from the camera. More sophisticated systems can record directly to a computer hard disk (one of the benefits of this is software can be used to 'watch' the video and detect motion, there are some excellent open source software tools that do this including EvoCam (Mac) and TinCam (PC) - in fact it is possible to set up a very effective and cheap home security network using Linux - but that's a subject for another article).

The video signal can also be recorded to re-recordable DVDs, however many homes have unused VCR's and putting them to work recording security cameras can be an excellent way to get a few more years of service from old technology. One of the problems with this is the length of tapes. So If using a VCR's it probably only practical to turn on recording when you go out. 4 hours tapes on long play can give you 8 hours, but check the playback quality is good enough to see a face. If by setting up a home security camera system your main goal is to deter burglars then you may not feel it necessary to do any recording, but if you are going to the trouble to install the cameras you might as well record the images just in case you're unlucky enough to be a victim of crime.

If you buy a security camera kit look for one that comes with some way of watching the video provided from the cameras, usually this is a specialised monitor but it can also be an LCD TV. But in a home situation you're going to sit there watching the video like a security guard, so you may not even bother with the monitor you may just use record the image (that is unless you going to fix a security camera video up at the front door you can see who is when the bell rings). If you're buying a more advanced surveillance system which uses IP cameras connected to a computer network there are lots of ways of being able to watch the image coming from the cameras. Once the signal is digital you can watch it on your computer (and record it to a hard disk), watch it on your mobile phone, watch it over the Internet etc, etc.

Finally the most important part of the system is the camera. There is only one at work at night so you'll need one that has infrared sensors. Make sure that the image quality is good enough to see the detail we need to identify somebody. You need to be able to see their features or clothing. The position of cameras is important. If you want to act as a deterrent they need to be clearly but if the thief can see the camera he will cover his face. On the other hand you can You can hide the cameras, they are no longer a deterrent, but you get a better chance of seeing and intruders face. Personally I think it's better for the camera to act as a deterrent. If you want to provide some perimeter protection you may need to consider an outdoor wireless security camera. These transmit a signal to a receiver meaning there is no need for a cable but you will still need to get power to them, may be from an outdoor socket close by. Of course you can get cameras which run off batteries or even charge their own batteries using solar power.

There are many things to consider when planning your home security system my advice to you will be to take the advice of an expert find your local security store and go in and talk to the people who worked there you may find that the system purchases made will cost you more than buying direct from the Internet but you do get the peace of mind of having expert advice and they can probably help you with installation or any problems you might have getting the system working correctly.

Read more about outdoor wireless security cameras or if you don't need wireless connectivity try standard outdoor security cameras.

How to Buy a Digital Camera

Choosing The Right Digital Camera

If you're having a hard time figuring out which camera to buy, you may be tempted to make a decision based solely on megapixel count. However, outside of making huge prints or blowing up small portions of an image, megapixels can be meaningless. In fact, a high megapixel count can lead to noisier, less-sharp images unless you're using a camera with a larger image sensor (such as a DSLR or a Micro Four-Thirds system camera).

Other features are often more important, and they depend on what you'll be using the camera for. For example, a lethargic camera that takes too much time between shots is a lemon for sports or action photographers, and a big, heavy DSLR that takes amazing photos may spend more time on the shelf than in your carry-on bag. A camera with no manual controls may take fabulous shots in bright sunlight, but lousy ones in more challenging situations.
(digital camera)Digital SLR (DSLR)

Strengths: Superb photos, videos, and low-light shooting; No shutter lag; Versatile interchangeable lenses; Manual controls for exposure and focus; Through-the-lens optical viewfinder.

Weaknesses: Expensive; Lack of portability; Not all DSLRs shoot video; Can be complex and intimidating.

If money's no object and performance is your top priority, a digital SLR yields the best photo quality and imaging controls of any type of digital camera. The combination of a large sensor, high-quality lenses that you can swap out to achieve a wide range of effects, great high-ISO performance in low light, and lightning-quick shutter response times make it the go-to camera for hobbyists and pro shooters. A DSLR is also the only type of camera that lets you frame shots using a through-the-lens optical viewfinder, meaning that what you'll see through the eyepiece is a true-to-life representation of your shot.

Though the prospect of using a DSLR can be intimidating for novice users, most modern models are outfitted with point-and-shoot-like features and LCD-based viewfinders to make the migration easier. Beyond user-friendly auto-exposure and scene modes, you also get room to grow as a photographer due to a DSLR's full range of manual controls.

The only major drawback to a DSLR is its size, which makes it a tough camera to bring anywhere you go. Price is also a major consideration, even after you spend an initial $700 to several-thousand dollars on the camera alone. Additional lenses are a must when it comes to unleashing the full power of your DSLR, and they usually cost several hundred dollars a pop. If you're interested in shooting video, make sure your DSLR supports it; these cameras capture stunning HD video, but only the newest DSLRs are video-capable.
Compact Interchangeable-Lens Camera (Micro Four-Thirds, Sony NEX, Samsung NX)

Strengths: More compact than a DSLR; Excellent photo and video quality; No shutter lag; Versatile interchangeable lenses; Manual controls for exposure and focus.

Weaknesses: No through-the-lens optical viewfinder; Can be expensive; Fewer lenses available than for DSLRs; Still a bit bulky for everyday use.

If you can live without an optical viewfinder, these interchangeable-lens cameras offer most of what a DSLR offers in a more-compact body: a large sensor, fast mechanical shutter, swappable lenses, noticeably better image and video quality that your average point-and-shoot, and manual controls.

The lack of an optical viewfinder is a byproduct of these cameras' smaller size: by eliminating the somewhat large mirror box that lets you frame your shot through the lens, manufacturers were able to make these interchangeable-lens cameras more compact.

One of the main problems is deciding which of the emerging compact interchangeable-lens formats to buy into, because like DSLR lens mounts, they're incompatible with other : Panasonic and Olympus both use the Micro Four-Thirds System lens mount, Samsung's NX10 uses its own NX lens mount, Sony's NEX series uses the new E-Mount system, and other companies are bound to release their own interchangeable-lens compacts. Because this is a newer kind of camera, there aren't as many lens options to choose from, either. Adapters are available that let you use full-size DSLR lenses with these cameras, but they often cost a hundred dollars or more.
Megazoom (Fixed-Lens High-Zoom Cameras)

Strengths: Very high optical zoom range; Manual controls; Normally have excellent image stabilization; Better lenses than standard point-and-shoot cameras.

Weaknesses: Bulkier than a point-and-shoot camera; Slightly expensive; Not much smaller than an interchangeable-lens camera.

Megazooms don't give you the same lens-swapping versatility of a DSLR or compact interchangeable-lens camera, but they are the most-versatile fixed-lens cameras available. They're called "megazooms" because they offer a whopping 20x to 30x optical zoom lens, usually serving up impressive wide-angle shots and telephoto reach.

Most megazooms also offer DSLR-like manual controls for aperture and shutter, as well as good image stabilization to help steady full-zoom shots. Because of the versatility of their lenses, they're good cameras for landscape photography (they can capture both wide-angle vistas and faraway details), sports photography (you can sit in the crowd and still get tight shots of in-game action), and animal photography (because you really shouldn't get too close to that bear).

Although a megazoom camera is smaller than a DSLR, it's about the same size as some interchangeable-lens compact cameras, and it won't slip into a pocket or purse. You'll probably need a backpack or camera bag to tote it along with you.
Pocket Megazoom (Compact High-Zoom Cameras)

Strengths: Very high optical zoom range for a pocketable camera; Portable but versatile; Normally have excellent image stabilization; Many of them have manual controls.

Weaknesses: Some are a bit bulky; More expensive than basic point-and-shoot cameras; Some lack manual controls.

If you're attracted by the versatile fixed lens of a megazoom camera but want something a bit more portable, a pocket megazoom is your best option. These compact cameras offer optical zoom ranges from about 10x to 15x, and although they're definitely more compact than a full-size megazoom or DSLR, some of them aren't quite small enough to slip in a pants pocket. A jacket pocket or purse should be big enough, however.

Although many pocket megazoom cameras have manual controls such as aperture and shutter priority, not all of them do, so be sure to check the specs if you'd like those features. These cameras normally have very good optical image stabilization to bolster their high-zoom lenses.
Advanced Point-and-Shoot (Compact Camera With Manual Controls)

Strengths: Better image quality than most fixed-lens cameras; Manual controls over shutter speed and aperture settings; Good secondary cameras for DSLR owners; Good learning tool for novice shooters.

Weaknesses: More expensive than a basic point-and-shoot; Can be more complicated to use than a basic point-and-shoot; Smaller optical zoom range.

Examples: Canon PowerShot S90; Canon PowerShot G11

Not all point-and-shoot digital cameras can live up to the scrutiny of a DSLR-toting pro, but an advanced point-and-shoot often gets the pick as a pro shooter's secondary, more-portable camera. These cameras have manual controls for setting the aperture, shutter, and ISO, letting you fine-tune your shot more granularly than you can with a basic point-and-shoot.

Although you don't get the zoom range of a pocket megazoom, image quality is often better; you don't get the distortion you sometimes see with a high-zoom lens. These cameras also often have wider apertures, so that you can accomplish a greater depth of field and shoot at higher shutter speeds.
Basic Point-and-Shoot

Strengths: Very easy to use; Inexpensive; Small enough to fit in a pants pocket; Usually have a large number of scene modes that select the right in-camera settings for your shot.

Weaknesses: Usually don't have any manual controls; Image quality is usually mediocre, especially in low light; Inflated megapixel counts.

A basic point-and-shoot camera is a no-brainer pick for anyone who just wants a camera to have on hand at all times; most of them even shoot 720p HD video now. In-camera automation is getting better and better, meaning that these cameras basically drive themselves; you don't get manual controls that help you fine-tune your photos, but these cameras normally have very good Auto modes and scene selections that choose the appropriate in-camera settings for your shot.

These cameras are have small sensors, so don't fall into the trap of buying an inexpensive camera with a very high megapixel count. Packing more megapixels into a small sensor usually leads to image noise, especially when you're shooting at higher ISO settings.

Although they won't offer the same optical zoom reach as a more-expensive camera, a good thing to look for in a basic point-and-shoot camera is wide-angle coverage (ideally around 28mm on the wide-angle end). That extra wide-angle coverage comes in very handy for group shots, arm's length self portraits, and landscape shots.
Ruggedized Point-and-Shoot

Strengths: Immune to drops, water, freezing, and sand.

Weaknesses: Usually have fewer features than a standard point-and-shoot camera; Sometimes have sub-par image quality.

These are the ultimate cameras for extreme-sports enthusiasts, mountaineers, snorkelers, and the just-plain-clumsy. Quite a few waterproof, freezeproof, drop-proof, and dustproof cameras are available, and they're great for taking underwater shots of fish, lugging to the beach, or taking on a snowboarding trip.

Due to their unique looks and sometimes-barren feature sets, these cameras aren't the first choice for everyday on-the-go use. Image quality can be a mixed bag, as well: they're rugged, but they usually don't have the best optics or biggest sensors. But they're durable, and that's sometimes a more important trait to have.

www.ibuynow.com.au offers a wide selection of replacement digital camera batteries for the leading manufacturers of digital cameras including Canon, JVC, Kodak, Olympus, Panasonic, Pentax, Sony, Yashica and more.

About the Author

We specialize in substitute batteries(laptop battery, Digital Camera Battery, power tool battery) and battery packs for laptops, camcorders, digital cameras, PDAs, mobile phones, and power tools, etc. as well as battery chargers!

Is more MP better in a digital camera or more optical zoom?

I am debating over what digital camera to invest in. One of the 2 I'm considering has 10 MP with 3X optical zoom while the other has 7.1 MP with 6X optical zoom. I cannot find a higher combination of the 2 within my price range. So which is better?

It depends on what you need the camera for.

IF you want larger prints, go with the higher MP.

If your shooting outdoors, and need to get closer to your subject, go with the higher zoom.

This probably didnt help much, but YOUR needs are something only you can decide.

Omni-Focus Video Camera To Revolutionize Industry
University of Toronto, a world-leading research university, announces a breakthrough development in video camera design. The Omni-focus Video Camera, based on an entirely new distance-mapping principle, delivers automatic real-time focus of both near and far field images, simultaneously, in high resolution. This unprecedented capability can be broadly applied in industry, including manufacturing ...

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