Archive for the ‘Computers’ Category

Digital Revolution With Canon Digital Camera

Monday, December 29th, 2008
digital cameras
Saris Hunsanugrom asked:

There were times when cameras were considered to be a rich man’s luxury but nowadays, clicking pictures with camera has become an important part of our daily events. With the constant improvement of technology, cameras have undergone a sea change and it was in the late 1970′s when digital cameras saw the light of the day.

The first digital camera was Sony Mavica, an analogue camera that used video floppy. However, since then, various brands launched digital cameras such as Nikon, Kodak Casio, JVC, Sony and Olympus to name a few. However, Canon Inc. Japanese MNC specialized in the manufacturing of computer printers, photo copiers and cameras. Canon started its operation in the year 1934 with Kwanon camera.

Ever since Canon started manufacturing its camera operation, it became a hugely successful company and a cynosure of camera lover across world. Presently, Canon digital camera is well known for its state of the art technology and advanced features that make it a well known brand name. Some of the high end Canon digital camera includes Powershot series like Powershot G9, SX 100 IS, S5 IS and TX1.

Canon digital camera EPH services include Powershot SD 950 IS, SD 890 IS, SD 790 IS, SD 870 IS, SD 770 IS, SD 1100 IS, SD 750, SD 850 IS, SD 800 IS and SD 1000. Canon digital camera’s A series includes A 460, A 550, A 470, A 560, A 580, A 570 IS, A 630, A 710 IS, A 590 IS, A 720 IS and A 650 IS to name a few.

Apart from Canon digital camera, Canon is famous for its Canon EOS camera system that comes with Single Lens Reflex (SLR) technology. However, for amateurs who love to shoot and capture moments of love and joy, the Canon digital camera Powershot series is the best digital camera that comes with DIGIC processor and state of the art design.

Some of the highly rated Canon digital camera include Canon Powershot SD 1100 IS that supports 8 mega pixels and 3X zoom. Some other quality features include image stabilization, auto focus features for perfect shot. It supports JPEG file format and has a 2.5″ LCD display with 32 MB of internal memory as a part of Secure Digital Memory Storage feature.

Canon Powershot SD950 IS comes with 12 mega pixel and 3.7 optical and 4X digital zoom feature. It also supports movie and sound mode. Its basic features include image stabilization, auto focus, 2.5″ LCD display, Secure Digital Memory of 32 MB. Canon Powershot A590 IS includes image resolution of 8 mega pixels and optical and digital zoom of 4X, face detection focus, movie mode and manual and auto exposure along with 32 MB memory and 2.5: LCD screen.

Canon Digital Rebel XTi / Canon 400D comes with 10.1 mega pixel, file format of RAW and JPEG, DIGIC II processor, 9 point CMOS auto focus, micro drive support and automatic vibration and dust reduction. Apart from it, there are numerous other Canon digital cameras that are famous for its quality image and resolution features.

What You Should Know Before Buying A Digital Camera

Saturday, December 20th, 2008
digital cameras
Roberto Sedycias asked:

Digital cameras are a vast improvement over the regular cameras. Electronic sensors are used in digital cameras to store pictures on a memory card. These pictures can be uploaded to a computer by an USB cable. Some digital cameras can record sound and video also.

It is imperative to study the different types of digital cameras, their features and identify our objective before buying a digital camera.

Types of digital cameras:

Compact digital camera – These are `snapshot` cameras invariably small and compact in size. They lack sophisticated hardware. Images are stored in JPEG format. Compact digital cameras have a sharp focus and a built-in flash.

Bridge camera – These cameras form a `bridge` between the compact digital camera and the DSLR camera. They have small sensors but large zoom ranges. Bridge cameras have an LCD electronic screen which can take a live preview of the photo before clicking it. Bridge cameras employ either electronic viewfinders (EVF) or optical viewfinders (OVF). The quality of these viewfinders is undergoing sea improvement regarding their size, resolution, visibility, magnification and refresh rate.

Digital single-lens reflex camera – An automatic mirror system is used which displays the exact image. The absence of time lag in the image is a great advantage for taking photos where the subject is constantly on the move. There is an auto focus system and furthermore, the resolution is extremely good. The only disadvantage is the absence of a `live preview` in most DSLR cameras.

Digital rangefinder camera – This is a portable camera suitable for theatre photography, portrait photography, street photography and candid shots. A rangefinder is a range finding focusing accessory attached to a digital camera allowing a sharp focus. Wide-angle lenses are more often used in rangefinders. Filters which absorb much light or change the color of the image can be used in this camera.

Main features:

Resolution – About 2 – 3 mega pixel resolution is enough for a decent digital camera. Resolution is a measure of the number of pixels on the sensor that create the picture. It is an important factor for printing a larger image or cropping it. Usually, the higher the resolution, greater the cost.

Type of lens – A glass lens gives a better quality picture than a plastic one. Again, a zoom lens adds greater versatility.

Close-up mode – Many digital cameras have a special close-up mode which allows one to take close-ups of extremely small objects like jewelry and coins.

Manual mode – Modes of different types are there, which enhance the quality of photographs in a particular situation. Portrait, landscape and close-up are the special exposure modes. Shutter speed and lens opening can be maneuvered in the manual exposure mode. Burst mode allows a number of pictures to be taken in rapid succession. Different filters can be used to provide beautiful effects. Extra flash modes can also enhance the clarity of the picture.

ISO – This value normally varies between 100 and 400. A higher value indicates that more number of pictures can be taken in dim light.

Conclusion:

After going through the different types of digital cameras and their features, one should ask oneself about the objective of buying a digital camera. The type of photography, the experience level, weather conditions, the budget and portability are all factors which need to be taken into account before purchasing a digital camera.

A higher mega pixel rating means a higher price. If large prints are not the criteria, then mega pixel rating around 4 should suffice. Lastly, reading reviews of the different digital cameras available for sale might just be the best option before purchasing an actual one.

Make Your Digital Camera Batteries Last Longer

Wednesday, December 3rd, 2008
digital cameras
Roberto Sedycias asked:

Digital cameras, also known as filmless cameras are one of the most intelligent inventions of late. Because before digital cameras, even the most high end cameras were chemical process dependent for photo printout.

But in digital camera, images are recorded electronically by an inbuilt computer. Though initially they were beyond the reach of normal people due to price factor, now they are available in within an affordable range.

Battery is an important component of any digital camera. In fact the longevity of your digital camera depends upon the performance of its battery. First thing to remember is never go in for alkaline AA batteries as they have shorter life span. Always opt for rechargeable batteries called as NiMH. Although they are a bit costly as compared to alkaline AA digital camera batteries, but they can be reused for a long time.

If you are going out on a long trip, it is a good idea to take extra rechargeable batteries. You never know when they will come handy as digital cameras consume power from batteries quickly even if you use rechargeable ones.

While going on a trip, it is also advisable to take battery charger along with you as digital camera batteries may lose their charge over time. Having a charger is helpful especially if u r novice in digital camera photography for you tend to consume more batteries while clicking the perfect shot. Here are some other helpful tips to increase the longevity of your digital camera batteries.

It is always advisable to remove the batteries when the digital camera is not in use. This simple precaution can ensure the longevity of batteries.

Never let your digital camera batteries get wet as water can corrode the batteries and eventually damage them.

You should have prior knowledge about this fact that, if you are using MicroDrive media these miniature hard drives may take up quite more power than Compact Flash cards and hence extra rechargeable batteries are a must.

Turn off your digital camera when not in use. If you are in a situation where you must snap pictures quickly, this may not be a wise suggestion, but if you are in no hurry and can afford a couple of seconds before snapping a still subject, by all means, conserve your digital camera`s energy.

You do not need to stop and take a look after taking photo every time as by doing this does use up your digital camera`s battery power. However, once in a while, it is good to check if your exposure, lightening is perfect or not.

Now-a-days, many digital cameras come with regular viewfinder and an LCD viewfinder facility. While the digital LCD viewfinder has better resolution, it can drain battery power. Turn it off when applicable and use your regular viewfinder for taking pictures.

Try to keep your image playback to a minimum as they can drain out the battery power.

While replacing batteries in a digital camera, it is recommended that their mAh values match. The `mAh` stands for Milliamp Hour is a technical term used while describing how much power a particular battery will hold. It might be possible that one lesser mAh battery will drain before the others, resulting extra strain on the remaining batteries.

For better performance, do check in for an add-on power pack that uses AA NiMH batteries in your digital cameras.

When your AA NiMH batteries stopped accepting a charge, do not throw away them for they are recyclable. Contact your battery manufacturer or local recycling agency to see if these dead batteries can be recycled.

Always make sure to insert similar batteries into your digital camera battery charger. Miss-match set of batteries can result in damaging the batteries or the charger, and in extreme case, a fire too can ensue.

Taking proper care of your digital camera batteries ensures optimum and long lasting performance. Hope the above tips will come handy for the consumers of digital cameras.

How to Choose a Digital Camera

Saturday, November 8th, 2008
digital cameras
Anmol Taneja asked:


So you have finally decided to go out and get that digital camera that you have always wanted. But how can you be so sure about which one to by? Sony, Nikon Coolpix, or a Digicam, the list is endless, what matters is, how you decide that the model that you are going in for, isn’t just big on words and empty on performance. Well, there are certain basic factors that you need to know before you choose the type of camera that you buy.

Megapixels: The higher the better, and more expensive too. This is one of the key factors behind choosing a digital camera. It defines the number of pixels and the more the number, the clearer the resolution of the picture you take. If you just want to share pictures over the computer, then a 2 megapixel camera works just fine. 3 megapixels will let you print for normal use, while 5 or above is professional quality.

Optical Zoom versus Digital Zoom: This one’s simple; digital enhances the image size more, but hurts the picture clarity whereas optical zooms allow enlarged pictures with good clarity.

Memory Storage: How many pictures will you be taking at a time? A 2 megapixel camera with 32Mb of memory stores up to 35 pictures. Although most cameras come with 8 – 16 Mb of built-in memory, external memory cards are available for more flexibility. Only thing to be careful about here is that these cards that you buy for you digital camera, may not be “hot-swappable”

Computer Compatibility: Ensure that the digital camera is compatible with the computer that you are going to plug it into for regular use.

Microphone: Check to see if there is a microphone to enhance your video mode. Will you be using it if there was?

Night Mode: if you are a creature of the night and will be using the digital camera in poor light conditions then it is useful to buy one that has a night mode feature.

Pre-programmed features: these allow you to have pre-determined settings for special light conditions in your digital camera.

Hold one: Hold the digital camera in your hand and see. A camera should feel right in your hands and should be comfortable to hold.

So before you rush out there to buy a digital camera, it is advisable to research a few models over the web and check for features, size and user friendliness. Buying a digital camera is an important investment and it is the key to a long list of memories. So make sure that when you go for that next family picnic, your ideal camera resides in your hip-pouch.



Buying a Digital Camera

Friday, May 16th, 2008
digital cameras
Pat Lyne asked:


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 better digital camera, 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 4×6 inches

3 Megapixels prints well up to 5×7 inches

4 Megapixels prints well up to 6×8 inches

6 Megapixels prints well up to 7×10 inches

8 Megapixels prints well up to 10×14 inches

12 Megapixels prints well up to 16×24 inches

For email, websites and printing snapshots, a 3 to 5-megapixel camera is a good choice. If you want to make high quality 8×10 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!