Wednesday, 5 November 2014

How to Buy a Camera

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How to Buy a Camera
Before you shell out big money for a camera you can't use, here are some ideas to help you buy the perfect camera to get the perfect scene.
Types of Cameras
The right type of camera can make a big difference in how you take pictures. Still photo cameras are classified into:
- Film cameras. Film cameras are most often used by people who like to work with film, or take pictures the old-fashioned way. A good film camera, when used properly, can sometimes take an even better picture than a digital camera.
- Digital cameras. Digital cameras are now very common and affordable. Digital cameras do away with film rolls and cartridges, and upload image files directly into computers or digital photo-editing machines.
Models of Cameras
Whether you buy a film camera or a digital camera, the camera model can also have a very direct and significant effect on the way you take pictures. There are two common still camera models available on the market:
- Point-and-shoot cameras are the simplest camera models available. Equipped with simple controls and autofocus features, you simply aim the camera at the object, click the shutter, and you instantly have a picture. Point-and-shoot cameras do not have as much flexibility and adaptability as other cameras, although some advanced point-and-shoot cameras do have a limited set of features to take a better still photograph.
- Single-lens reflex (SLR) cameras are advanced camera models equipped with interchangeable lenses and aperture settings that you could tweak to get the desired effect of a photograph. Much of the settings can be automated in digital cameras, although high-end SLR cameras that work with film have to be manually adjusted all the time.
Gauge Your Skills
An SLR camera may be the best option for many professional photographers because of its versatility, but a person who doesn't know how to use an advanced high-end camera will almost certainly mess up a picture. If you're really serious about taking up photography as a hobby or a means of making extra income, you may want to buy an SLR.
If you're an occasional photographer and you need a camera for special occasions, or if you're a snap-shooter, a point-and-shoot camera does the trick. If you're really good with a point-and-shoot camera, you may not even need to buy an SLR.
Test the Camera
Most camera dealers will allow you to test the camera first before buying it, so that you can get a feel for the camera before buying it. The camera you'll choose depends on your personal preference, but here are important things you need to keep in mind:
- Weight. If the camera is too heavy, you won't use it. Pick one that's easy to carry around, and doesn't weigh you down when you're taking action-packed, fast-paced pictures.
- Positioning of controls. The layout of the buttons, knobs, and other controls on a camera are laid out in many different ways. Pick a camera that has a convenient, clean, clear control layout.
- Precision. The dealer will probably allow you to take a few pictures here and there so that you can evaluate the quality of the camera. Make sure to check the crispness and sharpness of the image, and if the camera takes precise and accurate images. Remember that no two cameras are alike, and you may take quite a while in the camera store picking among cameras to find the best one.
Get as Many Features as You Need
Some camera buyers think that the more features a camera has, the better it is. A feature-rich camera may seem to have a lot of advantages, but it may only make operating the camera more complicated than it should. There are basic features of a camera that you should pay attention to:
- Autofocus. If you're a beginner photographer, or if you're an expert photographer who needs to use point-and-shoot cameras, autofocus makes it easier and faster for you to take a picture. Make sure that the autofocus feature on the camera is quick enough to automatically pinpoint and identify focus points on the object.
- Zoom varies with the length of the lens. It's best to buy cameras with a mechanical zoom instead of internal zoom (like ones in cellphone cameras), so that you can maximize the zoom capabilities of a camera.
Buy Peripheral Parts and Lenses
Now that you bought a good camera, you may also want to look into other accessories that can help enhance your photographic experience. Here are some things you also want to buy with your camera:
- Interchangeable lenses. For SLRs, a complete set of lenses can make all the difference between regular-looking pictures and fantastic-looking ones. While the lenses may be more expensive than the camera unit itself, you can think of them as investments.
- Straps and cases. A damaged camera is a real pain. With secure straps and cases, you can protect lenses and the camera body from scratches and damage.
- Tripods and stands. For portrait photographers or those who specialize in still-life photography, tripods and stands do away with the fatigue and stress of holding the camera in place.
With these tips to help you buy a camera, your only limits are your budget and your imagination. The right camera can help you take fleeting moments of anything and everything, and make them last forever.
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How Do I Select the Right Security Camera?


What security camera should I choose? Where should I put it? Questions like these must be answered as you decide to enhance the security of your home or office. Here we'll do an overview of exactly what you need to know to select the best security camera for your needs and to know the best location for installation.
Selecting the right camera
Cameras have different features for different purposes. When the area and objects to be under surveillance is determined then you must next determine the camera features to best suit the security needs of the organization.
  • Fixed or Pan, Tilt, and Zoom (PTZ Cameras)? When you walk into a building have you ever got the feeling someone was following you? How about just staring at you? Look up and you may see one of two types of cameras: Fixed or PTZ. The fixed camera will just stare at a particular view. The PTZ camera will survey the scene with movements like up and down, left and right, zooming in and zooming out. Fixed cameras are cheaper ($200 to $500 for fixed vs. $2000 or more for PTZ) and thus are more widely used. Fixed cameras aren't usually monitored on a daily basis whereas PTZ typically are. PTZ cameras are also commonly used when security personnel are available to monitor the cameras from a central security room.
  • Megapixel or Standard Definition? Think of picture quality of an HD television compared to picture quality of the television you were exposed to when you were a child and think of the image quality of movies today compared to image quality just 10 years ago. The improvements from standard to high definition image quality means smaller items in images can be identified and used as evidence or clues during an investigation of a surveillance video. Roughly 4% of surveillance video cameras that were sold in 2008 were high definition but due to the clarity of the images. Cameras with high definition are being chosen more and more by organizations. Security cameras can go up to 16 megapixels in resolution whereas a high definition television has a limit of 3 megapixels.
  • Analog or IP? The difference between the two is the same between a camcorder that records on a video cassette (analog) and an all digital camcorder (IP). While both types can be transmitted through a network an analog camera requires an adaptor to do so. A major benefit for using IP video surveillance cameras is that only IP cameras are capable of having megapixel resolution. Most infrared and thermal cameras are only available in analog, however. IP cameras are rapidly replacing analog cameras in the video surveillance market and currently represent about 20% sold.
  • Color, Thermal, or Infrared? With security cameras, color may be beneficial in low lighting but that's just about the only time. In this case an infrared or thermal camera would be beneficial as they produce black and white images. Black and white images won't blend together in the dark as color images would. Thus, color cameras would be better suited for surveillance during the day or of well lit areas. Infrared or Thermal are better suited for darker areas. Infrared cameras use infrared illuminators to create a clear image. These special lamps make infrared cameras considerably more expensive, like 2 to 3 times more, than color cameras. Thermal cameras are even more expensive and can cost from $5000 to $20,000. These cameras produce outlines of objects and do not require any lighting and would be good for areas like in the middle of the desert or woods.
Location, Location, Location
The security camera is a crucial component of surveillance and the placement of it is as crucial as the security camera itself. Placing the camera in the wrong spot would be as effective as putting a blindfold over the lens. The very purpose of a camera is to survey activity and protect property. When placing a camera one must consider the assets being protected and all possible ways people can enter the secure area, known as chokepoints.
  • Assets: Cameras should be placed in those locations that most effectively cover your valuable assets. These are items and areas that are important to a particular business or organization. Areas of merchandise, safes, walls with expensive art, and valuable equipment are some examples of assets. The areas where critical activity occurs, such as parking lots, checkout counters, and lobbies, are also considered to be assets.
  • Chokepoints: These are all the possible ways for entering a particular area. Cameras that are strategically placed at these entry points provide for a cost-effective monitoring system. Driveways, doorways, hallways, corridors, windows, even accessible chimneys are examples of chokepoints.
Certain cameras are better suited for certain situations and certain budgets. It is common practice for businesses and organizations to use different types of cameras to cover different areas. An IP PTZ camera for example could be used to secure a wide space such as a parkparking lot. A fixed infrared camera may be used at a chokepoint in a warehouse with low lighting. With the right selection and placement of video cameras a video surveillance system is most beneficial for the security of any establishment.
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Tips For Buying a Digital Camera

Tips For Buying a Digital Camera

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Family and friends can be pretty far flung these days, so how do you keep in touch? Snail mail and phoning are good options, but it's fun to be able to share pictures. With the advent of digital cameras, it's easy to post pictures on a blog or website, or send pictures via email.
Of course, film cameras will work, as you can scan and convert pictures to digital files, but the easiest way to send pictures quickly and cheaply is to use a digital camera.
How To Find What's Best For YOU When Buying A Digital Camera
There are all kinds of digital cameras available these days, so the trick is to find the one that suits your needs and budget. If you are buying your first digital camera, the lingo and technology are a bit different than for film cameras, so before shopping take time to learn a little and figure out what you'd like to buy.
First, what kind of photographer are you? Do you like total control over the picture taking process, or would you rather just aim the camera and push the shutter button? Then it's also helpful to decide what you want to do with your pictures. Do you just want to put them online or send them via email, or do you want to be able to print them, and if so, how large do you want your prints?
If photography isn't your passion, and you just want to have pictures to share, buying a simple point-and-shoot digital camera is probably best. It has automatic settings, so all you have to do is aim the camera, press the shutter and viola! Instant picture!
However, if you prefer more control over the picture taking process, try buying a mid-range digital camera. There is a wide range in both price and features. For the more serious hobby photographer, there are "prosumer" cameras midway between point-and-shoot cameras and digital SLR cameras. They offer better lens quality and usually more features than a point-and-shoot, though those little cameras can come pretty loaded these days!
Digital SLR cameras are top of the line and more expensive. These work more like traditional cameras, having a body with detachable lens. This gives you more options with being able to change lens, but it's also much more expensive. Just one lens can cost as much as a point-and-shoot digital camera! There's also usually a steeper learning curve to figure out how to use all the options on a digital SLR camera.
However, if you're buying your first digital camera, intermediate, "prosumer" and digital SLR cameras probably aren't the best choice. All the settings and features can be a little overwhelming for the beginner, and your expensive camera may end up collecting dust somewhere. Try a low to midrange camera first and get a feel for digital cameras and what features are most important to you. Then when you're ready to move up and buy a Digital SLR, you'll have a better idea of what to look for before you lay out your hard earned cash!
What To Look For When You're Ready To Buy A Digital Camera
You can buy digital cameras in all sorts of places these days, from fancy department stores to discount stores, photography/camera shops and many stores online. While you can sometimes find great deals on-line, if this is your first digital camera, go to shops and look at different cameras if at all possible. It helps to pick it up and get the feel of the camera in your hand to see if it's comfortable and the controls are easy to use, and you can check out what features it has and how they work.
But what exactly are you looking for?
A pixel makes your picture....
One of the first things to check out when buying a digital camera is the MEGAPIXELS. A pixel is a single dot in a graphics image. A megapixel is equivalent to one million pixels. A 1-megapixel camera would produce an image roughly 1200 pixels wide by 900 pixels high, a 3 megapixel would be 2048 x 1536 megapixels, and so on. Higher megapixels mean better resolution, but aren't the whole picture. The main thing to keep in mind is the more megapixels, the bigger image you can print.
Approximate Megapixels vs. Print Size
-2 Megapixels prints well up to 4x6 inches
-3 Megapixels prints well up to 5x7 inches
-4 Megapixels prints well up to 6x8 inches
-6 Megapixels prints well up to 7x10 inches
-8 Megapixels prints well up to 10x14 inches
-12 Megapixels prints well up to 16x24 inches
For email, websites and printing snapshots, a 3 to 5-megapixel camera is a good choice. If you want to make high quality 8x10 prints or larger, you need more megapixels. Higher megapixels also allow you to crop down to a smaller portion of the picture while still retaining sharpness in prints.
One other thing to keep in mind when considering megapixels and resolution, be sure you are getting optical resolution. This is the actual number of megapixels the camera records. Some cameras offer interpolated resolution to get bigger pictures from the same number of megapixels by using software algorithms to determine what color pixels to add, so the picture becomes bigger at the expense of clarity.
Opt for optical...
Digital cameras have two kinds of zoom, optical and digital. In this case, focus on the optical zoom. It's the one that actually uses the lens' optics to bring the subject closer. The higher the number, the further away you can "pull in" your subject. The digital zoom merely takes the original information and makes it bigger, and once again, clarity is sacrificed. Most serious photographers turn off digital zoom. Stick to optical!
For Your Viewing Pleasure...
Digital cameras commonly use an LCD screen instead of a viewfinder to focus on your subject, though some come equipped with both. Check the size of the screen when buying a digital camera to be sure you can comfortably see your subject. It's also really handy to have a flip screen that allows you to hold your camera low or high, and still be able to see what's on the screen.
Fun features...
Many digital cameras offer settings for such things as burst shooting mode, which is handy if you want to take pictures of moving subjects. The camera shoots a series of pictures without pause, then writes the files to memory. Other features allow for manually changing settings, special effects, short digital movie files, using an external flash, and much more. Look over several different cameras, decide what features you just have to have, and which are on the "nice to have but not vital" list. No one camera will do everything well.
Get the Picture...
You've got to get the pictures out of the camera to share them. Usually the files are downloaded to your computer through a USB port, so make sure your computer has one. Also, keep in mind when choosing a camera, the more megapixels, the bigger the files. You've got to store those files somewhere, so how much memory is available on your computer? Does it have a CD burner?
However, you can still buy a digital camera even if you don't have a computer. Many photo labs, even in places like Walmart or Kmart, have machines with the capability of making prints and/or photo CD's from memory cards, and will make a disk of the files, sort of like digital negatives. There's also the option of buying a photo printer with a docking station for your camera. Just plug the camera into the docking station, and bypass the need for a computer to print.
Cash After Camera
When buying your digital camera, keep some cash in reserve, because there are two more important purchases you need to make.
1. Memory - The digital camera's equivalent of film, the amount of memory determines how many pictures you can take. Different cameras use different types of memory, so the first step is to find out what your camera uses. The most popular types are: Secure Digital (SD), CompactFlash (CF), SmartMedia (SM), Memory Stick (MS), MultiMediaCard (MMC), and xD-Picture Card (xD).
Cameras are usually packaged with a small MB-sized card. A second card of 64 MB is good, but of course the more MB and the more cards, the more pictures you can take before having to download and erase the images. The different cards are NOT interchangeable, so be sure to buy the right kind for your camera!
2. Battery - There's nothing more frustrating than being in the middle of snapping pictures and the battery dies. Get extras. It's worth the expense to have a second battery charged and waiting should the one in your camera lose power. The rechargeable ones are more expensive, but the ability to use them over and over makes them worth the initial outlay of cash.
That's The Total Package!
There you have the basics for choosing a digital camera. Decide what kind of pictures you are likely to take, what size prints you want to make, how much zoom, and are there any extras you can't live without? Look for the camera that most closely matches your list in your price range, buy a bigger memory card and an extra battery set, and you're good to go!
Have fun sharing those pictures with friends and family

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