Saturday, October 6, 2007
What else can my digital camera do?
Video Clip Recording:
Many digital cameras can capture video clips. While none of them can reach the quality of a dedicated video camera, some are better than others. The best video-clip quality currently available from a digital still camera is 30fps VGA with sound. Some cameras allow you to record a continuous clip up to the capacity of your memory card, while others shoot only 30 or 60 seconds. And not all cameras that shoot video capture sound, so read the specifications if you want your clips to be with sound.
Image Effects:
Some cameras can produce different artistic image effects. For example, pictures can be taken in monochrome, sepia and negative modes. Panoramic views are possible, as are deliberate multiple exposures where you superimpose two or more images. Some cameras can divide the CCD array into four, six different pictures.
Many digital cameras can capture video clips. While none of them can reach the quality of a dedicated video camera, some are better than others. The best video-clip quality currently available from a digital still camera is 30fps VGA with sound. Some cameras allow you to record a continuous clip up to the capacity of your memory card, while others shoot only 30 or 60 seconds. And not all cameras that shoot video capture sound, so read the specifications if you want your clips to be with sound.
Image Effects:
Some cameras can produce different artistic image effects. For example, pictures can be taken in monochrome, sepia and negative modes. Panoramic views are possible, as are deliberate multiple exposures where you superimpose two or more images. Some cameras can divide the CCD array into four, six different pictures.
What are my storage options?
Most digital cameras use memory cards of one kind or another to store the images you take. These can be taken out of the camera and replaced by other cards. Several different card types are in use and are not interchangeable. You can read more about storage in the feature on Memory Cards.
Compact Flash Cards
Compact Flash Card is the most common format in use for digital camera storage but can also be used by other devices. Comes in two version Type I and Type II. Compact Flash Card Type I max capacity is 256 MB but the Compact Flash Card Type II can store more than 256 MB. Compact Flash is not only the most common but also the most supported format today. It's used by Nikon, Nikon, Casio, Minolta and HP.
SmartMedia Cards
SmartMedia Cards are almost the same as Compact Flash Cards, they're not as wide supported and are a little bit thinner than Compact Flash Cards. SmartMedia Card max capacity is still at 128MB. Olympus and Fuji digital cameras use SmartMedia cards but are now making their new models with XD Flash Memory Card that'll soon replace the SmartMedia Cards.
XD Flash Memory Card
The most recent and most advanced memory cards today, XD Flash Memory Card are really tiny and are storing the photos into the memory really fast. Most new models of Olympus and Fuji digital cameras are using XD Flash Memory Card.
Compact Flash Cards
Compact Flash Card is the most common format in use for digital camera storage but can also be used by other devices. Comes in two version Type I and Type II. Compact Flash Card Type I max capacity is 256 MB but the Compact Flash Card Type II can store more than 256 MB. Compact Flash is not only the most common but also the most supported format today. It's used by Nikon, Nikon, Casio, Minolta and HP.
SmartMedia Cards
SmartMedia Cards are almost the same as Compact Flash Cards, they're not as wide supported and are a little bit thinner than Compact Flash Cards. SmartMedia Card max capacity is still at 128MB. Olympus and Fuji digital cameras use SmartMedia cards but are now making their new models with XD Flash Memory Card that'll soon replace the SmartMedia Cards.
XD Flash Memory Card
The most recent and most advanced memory cards today, XD Flash Memory Card are really tiny and are storing the photos into the memory really fast. Most new models of Olympus and Fuji digital cameras are using XD Flash Memory Card.
What kind of lens do I need?
Lens quality also has an important influence on the image quality - there is little point in having a high-resolution digital conversion of an unsharp optical image. Lens quality can only really be assessed by practical tests, but the better-known camera and lens makers - Nikon, Nikon, Olympus, Konica Minolta, Pentax, Leitz as well as Sigma, Tamron, Tokina and others - can generally be relied on to produce good quality. Fixed focal length lenses
These lenses offer no optical zoom. Look for autofocus instead of fixed focus, as well as selectable macro and landscape focus modes.
Retractable zoom lenses
These zoom lenses retract into the camera body when the camera is off and extend when it's on.
Interchangeable lenses
Digital SLRs use interchangeable lens systems, which means that you can detach the entire lens from the camera body and replace it with any other compatible lens.
What a Zoom Lens Can Do For You?
Most people think of a zoom lens as a tool for getting closer to your subject. It is. However, it can be used for so much more. The real benefit of using a zoom lens is the speed and ease with which you can recompose your picture.
What a Fixed Lens Can Do For You?
Fixed-focal length lenses will give, in theory at least, the sharpest results. This makes sense; if you want the least distortion, etc., you want to have the least amount of glass between you and your subject. A zoom lenses usually consists of a great number of different elements while a fixed will have few.
These lenses offer no optical zoom. Look for autofocus instead of fixed focus, as well as selectable macro and landscape focus modes.
Retractable zoom lenses
These zoom lenses retract into the camera body when the camera is off and extend when it's on.
Interchangeable lenses
Digital SLRs use interchangeable lens systems, which means that you can detach the entire lens from the camera body and replace it with any other compatible lens.
What a Zoom Lens Can Do For You?
Most people think of a zoom lens as a tool for getting closer to your subject. It is. However, it can be used for so much more. The real benefit of using a zoom lens is the speed and ease with which you can recompose your picture.
What a Fixed Lens Can Do For You?
Fixed-focal length lenses will give, in theory at least, the sharpest results. This makes sense; if you want the least distortion, etc., you want to have the least amount of glass between you and your subject. A zoom lenses usually consists of a great number of different elements while a fixed will have few.
Difference Between Optical and Digital Zoom
Both optical zoom and digital zoom are means to magnify an image, but they work in different ways. Optical zoom will always yield a far superior image than digital zoom.
How does optical zoom work?
A digital camera that offers optical zoom works the same way as a zoom lens on a traditional camera. A traditional lens works by collecting light rays and projecting them onto a piece of film, or in the case of a digital camera, onto the sensor.
Unlike a fixed lens, a zoom lens has several moveable glass elements inside. By adjusting these elements, the focal length of the lens can be changed. Adjusting the focal length both changes the view distance and reduces the field of view, causing the projected image to appear larger.
In a digital camera with optical zoom, the same number of pixels are captured when the image is magnified. The only thing that changes is which rays of light are projected onto the sensor to form those pixels.
How does digital zoom work?
Unlike optical zoom, digital zoom works by scaling up the pixels in the final image after it is captured. This is very similar to cropping and resizing your picture in PhotoShop.
How does optical zoom work?
A digital camera that offers optical zoom works the same way as a zoom lens on a traditional camera. A traditional lens works by collecting light rays and projecting them onto a piece of film, or in the case of a digital camera, onto the sensor.
Unlike a fixed lens, a zoom lens has several moveable glass elements inside. By adjusting these elements, the focal length of the lens can be changed. Adjusting the focal length both changes the view distance and reduces the field of view, causing the projected image to appear larger.
In a digital camera with optical zoom, the same number of pixels are captured when the image is magnified. The only thing that changes is which rays of light are projected onto the sensor to form those pixels.
How does digital zoom work?
Unlike optical zoom, digital zoom works by scaling up the pixels in the final image after it is captured. This is very similar to cropping and resizing your picture in PhotoShop.
How many megapixels do I need?
The term megapixel means one million pixels. Digital images are made of pixels, or picture elements.
One of the questions many people ask when looking for a new digital camera is "How many megapixels do I need?" Many people are aware that the number of megapixels the camera is able to capture in a single image has a direct effect on the quality of the photos the camera is able to output. However, because the number of megapixels also has a direct effect on the price of the camera, most people also want to know how many megapixels they really need to get good quality prints without spending too much money on a camera.
It's important to note that there are many factors in choosing a digital camera, many of which may be increasingly more important than the number of megapixels. A camera with a high megapixel count but poor optics will take high resolution, poor looking pictures. You will be able to see close up just how bad the picture looks. It's worth shopping carefully when choosing a new digital camera rather than simply choosing the unit off the shelf with the highest megapixel count.
However, the megapixel count is still an important factor in choosing the right camera for you.
First, determine how big you want to print your picture. Next multiply the number of inches by the desired ppi to calculate the total number of pixels needed. For example, let's say you want to make a typical 3 x 5-inch print:
One of the questions many people ask when looking for a new digital camera is "How many megapixels do I need?" Many people are aware that the number of megapixels the camera is able to capture in a single image has a direct effect on the quality of the photos the camera is able to output. However, because the number of megapixels also has a direct effect on the price of the camera, most people also want to know how many megapixels they really need to get good quality prints without spending too much money on a camera.
It's important to note that there are many factors in choosing a digital camera, many of which may be increasingly more important than the number of megapixels. A camera with a high megapixel count but poor optics will take high resolution, poor looking pictures. You will be able to see close up just how bad the picture looks. It's worth shopping carefully when choosing a new digital camera rather than simply choosing the unit off the shelf with the highest megapixel count.
However, the megapixel count is still an important factor in choosing the right camera for you.
First, determine how big you want to print your picture. Next multiply the number of inches by the desired ppi to calculate the total number of pixels needed. For example, let's say you want to make a typical 3 x 5-inch print:
3 inches x 300 ppi = 900 pixels
5 inches x 300 ppi = 1500 pixels
900 x 1500 = 1350000 pixels = 1.35 megapixels
If you wanted to make an 8 x 10 portrait instead:
8 inches x 300 ppi = 2400 pixels
10 inches x 300 ppi = 3000 pixels
2400 x 3000 = 7200000 pixels = 7.2 megapixels
If you don't mind a drop in quality, you can print your portrait at 200 ppi:
8 inches x 200 ppi = 1600 pixels
10 inches x 200 ppi = 2000 pixels
1600 x 2000 = 3200000 pixels = 3.2 megapixels
What kind of digital camera is best for me?
We wish we could give you quick answer. But that is like asking what is the one best food. While there are over 400 digital cameras on the market, there is no single best digital camera for everyone.
To get a good fit with a digital camera that matches your needs, price range and personality, requires a considered study of your purposes, preferences and budget. We need to answer the following questions: What kind of traditional camera do you current using? What kind of pictures do you need and want, and how will you use them? How experienced are you as a photographer? Are there any specific features that are necessary for your work? How much money do you wish to spend? And etc...
It's the digital camera specification for you:
To get a good fit with a digital camera that matches your needs, price range and personality, requires a considered study of your purposes, preferences and budget. We need to answer the following questions: What kind of traditional camera do you current using? What kind of pictures do you need and want, and how will you use them? How experienced are you as a photographer? Are there any specific features that are necessary for your work? How much money do you wish to spend? And etc...
1.You are a snap shooter:
I want to take photos that I can e-mail to friends and family, post on the Web, or print in sizes smaller than 8x10 inches. I'd like a digital camera that is easy enough for the whole family to use and small enough to take anywhere. I'll be printing on an inexpensive, all-purpose inkjet printer.It's the digital camera specification for you:
| Resolution | 3 megapixels or greater |
| Price | $150 to $500 |
| Lens type | Zoom (range encompassing at least 38mm to 114mm, 35mm equivalent) |
| Storage media | Internal memory, CompactFlash, Memory Stick, xD-Picture Card, or Secure Digital/MultiMediaCard |
| Photo file format | JPEG |
| Interfaces | USB, NTSC/PAL television connection |
| Exposure controls | Automatic, programmed scene modes, exposure compensation (for tweaking the automatic exposure) |
| Focus controls | Automatic |
| Flash modes | Automatic, fill, red-eye reduction |
| Software | Photo stitching, photo album, slide show |
| Multimedia | Video-clip recording with sound |
| Cool features | Direct-to-printer output compatibility and in-camera red-eye removal |
2.You are a budget buyer:
I want to find a digital camera that costs less than $300 that will let me post snapshots on the Web; e-mail them to friends; print them in small sizes (4x6) and get me up and running quickly without requiring me to read the manual. I want a camera that will good enough for a few years.| Resolution | 3 megapixels or greater |
| Price | Less than $200 |
| Lens type | Fixed (between 38mm and 55mm, 35mm equivalent) or zoom (range at least encompassing 38mm to 76mm, 35mm equivalent) |
| Storage media | Internal memory, CompactFlash Type I, Memory Stick, xD-Picture Card, or Secure Digital/MultiMediaCard |
| Photo file format | JPEG |
| Interfaces | USB, NTSC/PAL television connection |
| Exposure controls | Automatic, exposure compensation (for tweaking the automatic exposure) |
| Focus controls | Autofocus or fixed focus |
| Flash modes | Automatic, fill, red-eye reduction |
| Software | Basic photo editor |
| Cool features | Webcam capabilities, automatic scene modes, continuous-shooting mode, autofocus assist lamp |
Somep points to consider:
- Look for cameras that can save files in a raw state. Saving your image as a RAW,TIFF will provide you with a higher quality image to work from.
- Choose a camera with an eye-viewer rather than just a screen. LCD screens use up a lot of battery and inaccurate
- Find a camera with minimal 'shutter lag'. An annoying feature of some digital compacts is the lag between clicking the shutter and the camera taking the shot
- Ensure that the camera has a good quality lens. Ideally not plastic and good brand
- Choose a camera with a large buffer memory. This allows a number of images to be taken before writting into camera storage
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