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Sunday 25 December 2011

How Many Mega-Pixels Do I Need?

One of the confusing things in choosing a digital camera is deciding how many mega-pixels you should look for.  The answer depends on what you plan on doing with the finished pictures.




First, you need to understand what a pixel is.  In terms of digital prints, a pixel simply means a dot of color that makes up the image.  A mega-pixel is equal to one million pixels.  The more mega-pixels a camera has, the greater the amount of information it records.  


The easiest way to decide what to look for is to know what size prints you are likely to print from your camera.  A one mega-pixel camera is fine for those who don’t plan on printing photos but rather just post them on the internet.  A small print, say 4 x 6, will print acceptably from this camera.


A 2 mega-pixel camera will enable you to produce good quality 5 x 7 prints and fair quality 8 x 10 prints.  When you reach 4 mega-pixels you can print out excellent quality 8 x 10 prints and acceptable 11 x 17 prints and a 5 mega pixel camera will allow you to print out high quality 11 x 17 prints.


Most families find a camera in the 3.2 Mega-pixel range to be the best choice.  The quality of both 5 x & and 8 X 10 prints is very good yet the files on your computer are not so large you need worry about not having enough space.


Any camera over 5 mega-pixels is unnecessary for all but professionals in photography; even then, only those who have need for poster-size prints find that many mega-pixels worth the money.  Most freelance photographers find 4 or 5 mega-pixels to be sufficient for excellent-quality prints.


The choice is yours.  Look to what you plan on doing with your photos and then decide.  In most cases spending the money for increased optical zoom and lower mega-pixels is the best choice.

Saturday 10 December 2011

Focus Modes in Digital Cameras

While some of the least expensive digital cameras have only automatic focus, meaning the camera does all the work on bringing your subject into the best possible focus, most SLR digitals offer three different focus modes:  manual, single auto focus and continuous auto focus.  All three of these will be addressed here.




With manual focus, the camera stays out of the focus equation and you, the photographer, make all the decisions regarding this.  This is done by setting different buttons or actually using an attached focusing ring that rotates on the camera lens.  For those who like to have complete creative control of the finished product, this is the best focus mode.


In single auto focus mode, the camera automatically focuses when you press the shutter button either all the way down to shoot a photo or half way down to lock the focus.  This mode is useful when shooting static objects. 


In continuous auto focus the camera continuously focuses on the objects in the photo.  In this mode the camera continuously corrects the focus as the objects distance from the camera changes. This mode is useful when you shoot photos of moving objects such as a race car during a race or airplanes during an air show. You can hold the shutter button half way down and continuously move the camera to follow the object. The camera will continuously keep the object in focus. 




Like any other feature automatic and manual focus modes have their pros and cons. The first step to using them to your advantage is to understand how they work and what they were designed for. The next step is to experiment shoot photos using different focus modes and different types of objects and see how the camera behaves. Once you have done that you will be ready to instinctively use the best focus mode for each photo situation.

Monday 31 October 2011

Get To Know Your Digital Camera: Why Digital Photography?

Get To Know Your Digital Camera: Why Digital Photography?

Why Digital Photography?

Digital photography is quickly becoming the preferred way to take pictures.   If you are in the market for a new camera, consider the following advantages of digital over traditional film photography.


In the long run, digital is less expensive.  All photos are recorder are on memory device within the camera and then downloaded straight to your computer.  You skip the need to keep buying rolls of film and paying for developing. You can send unlimited copies of the same picture to friends and relatives without spending a penny extra.


You see your pictures quicker.  Most digital cameras allow you to view your photos immediately.  There is no waiting and worrying about whether or not that “perfect shot” turned out.  You can take a picture of that new baby and immediately download it to your computer to share your good good news with friends and relatives. There’s no need for anxious grandparents to wait days or even weeks for a picture.


Most digital cameras have built in editing features.   Cropping and re-centering the picture to make it look its best can be done easily.  You no longer have to worry about a stray hand distracting from the main subject of your photo.  Sharpening can be done immediately to bring out the details.  Within minutes you can have a print-perfect photo.


You avoid the frustration of running out of film and having to find a store that is open in the middle of an important event or on vacation.  Depending on the size of your memory card and the setting of file size and quality, which you often control, you can store a couple hundred pictures on one tiny card.  That is the equivalent of nine or ten rolls of film.  


These are just a few of the advantages of digital photography.  It is definitely worth considering as you search for your next new camera.

Wednesday 28 September 2011

Digital Zoom Versus Optical Zoom

Many digital cameras offer both digital and optical zoom.  These two often confuse the average camera buyer, until you know what you’re looking at.


Optical zoom works much like the zoom lens on a 35 mm film camera. It changes the length of your camera’s lens and draws the subject closer to you.  The optical zoom keeps the quality of the picture. Digital zoom works differently. It simply takes the picture and crops it then enlarges the part that is left.  It causes the quality of the photo to be reduced, sometimes greatly.


What this means in terms of output is you may have a larger view of an object with the digital zoom, but chances are your image will become unfocused.  Details will become lost.  It is actually best to turn off the digital zoom feature of your camera if possible.  This will prevent you automatically zooming in too close as the digital zoom is often an extension of the optical.


There are a couple of things you can do if you want a closer view of a subject but want the quality of your picture to still be good.  Try moving in closer when you take the picture.  Often only a foot or two will do the trick.  If this isn’t possible, you can set your camera to take a picture at its highest file size.  This will result in a photo that can be cropped to include only your desired subject, yet allow for an image that is still clear.


Digital zoom has its place.  It can be used if the only destiny of your photo is the internet.  Photos online can be a much lower quality in the camera and still appear acceptable when sent through e-mail or posted on a web gallery.  If your goal is printing, however, seek a camera that has a greater optical zoom and turn off the digital zoom.  Your pictures will be better in the end, even if they are not as close up.

Tuesday 16 August 2011

Three Steps to Buying Your First Digital Camera


You’ve decided it’s time to buy a digital camera, but which one?  The aisles are full of different brands with different features and a wide variety of prices to match.  The task can be overwhelming.  Following are the three most important things you can do to make the decision easier.:
Do your research.  Talk to people who have digital cameras and ask them how they like theirs.  What features do they use often and which ones are “just there”?  Go online and visit sites that review different cameras and read what they have to say.


Next, decide how much money you are willing to spend on a camera.  There is no sense going into debt over a camera unless it will be used as your major income source.  Decide how often you will use the camera, what places you will be using it and who else will be using this particular camera. How much money can you reasonably spare?  All these things will help you narrow your choices.
Evaluate your needs and experience level.  Do you have experience or is this your very first camera?  Do you have time to learn a lot of features or are you happy with a camera you can just point and click?  Do you plan on growing in photography?  If so, a digital SLR may be your choice so it can be added onto to grow with you.  


Buying a digital camera doesn’t have to be a purchase full of stress.  Do your homework and know what you are looking for, then stick with the decision.  You are the best judge of what you need, trust yourself.  Each of the above steps will narrow your choices considerably and make that final decision easier to make and you can enjoy discovering the wonders of photography with your new purchase.

Wednesday 3 August 2011

Digital Camera Terms To Know

It helps when learning to use your new digital camera to also know what some of the more common terms mean.  Below you will find many of these common terms defined.


Automatic Mode — A setting that sets the focus, exposure and white-balance automatically.


Burst Mode or Continuous Capture Mode — a series of pictures taken one after another at quickly timed intervals with one press of the shutter button. 


Compression — The process of compacting digital data, images and text by deleting selected information.


Digital Zoom — Cropping and magnifying the center part of an image.


JPEG — The predominant format used for image compression in digital cameras.

Lag Time — The pause between the time the shutter button is pressed and when the camera actually captures the image


LCD — (Liquid-Crystal Display) is a small screen on a digital camera for viewing images.


Lens — A circular and transparent glass or plastic piece that has the function of collecting light and focusing it on the sensor to capture the image.


Megabyte — (MB) Measures 1024 Kilobytes, and refers to the amount of information in a file, or how much information can be contained on a Memory Card, Hard Drive or Disk.


Pixels — Tiny units of color that make up digital pictures. Pixels also measure digital resolution. One million pixels adds up to one mega-pixel.


RGB — Refers to Red, Green, Blue colors used on computers to create all other colors.


Resolution — Camera resolution describes the number of pixels used to create the image, which determines the amount of detail a camera can capture. The more pixels a camera has, the more detail it can register and the larger the picture can be printed.


Storage Card — The removable storage device which holds images taken with the camera, comparable to film, but much smaller. Also called a digital camera memory card.


Viewfinder — The optical "window" to look through to compose the scene. 


White Balance — White balancing adjusts the camera to compensate for the type of light (daylight, fluorescent, incandescent, etc.,) or lighting conditions in the scene so it will look normal to the human eye.

Wednesday 13 July 2011

Your Digital Camera Owner’s Manual

  All cameras come with an owners manual, but so few people take the time to read it.  Once they get past the basic operations, they get anxious to go out and try the camera.  Maybe all the new terms are confusing or there seems like too much information to digest.  This is understandable, but by not reading the entire manual, you limit yourself and many cool features of your camera are never used.  Hopefully you will find the following suggestions helpful in getting the most from your digital camera.


  After your first overview of the features your camera possesses, decide what you would like to explore the most.  Pick only one special feature.  Read the instructions on what this feature can do and how to use it.  Don’t worry if it isn’t completely clear, that will come in time.


  Now the fun part.  Take your camera and start using this special feature.  Try all the different settings within this one feature.  See how your pictures change.  Explore what this feature does.  Don’t stop until you know this feature inside and out  and don’t go onto the next feature until you have fully explored this one.


  When you are satisfied you know the ins and outs of one special feature, return to the owner’s manual and pick another special feature you would like to learn.  Repeat the above process with this feature, only returning to the manual when you are satisfied you have mastered the new skill.  


  By working through the owner’s manual in this way, you will find it isn’t so overwhelming.  The hands-on practice of each skill will help you learn it thoroughly.  When you have covered all the cool things your camera will do, go out and enjoy them all.  You will be glad you took the time to become friends with this wonderful creation.
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