Bob pushed the shutter button and … nothing happened. The stock passed into the hands of his son and the actual photos taken was part of a cheerleader pom-pom. Bob lose contact too. He resisted an insane incentive to shut the camera down and jump on it.
This was his first digital camera, and Bob had just suffered a nasty surprise. He had used film cameras all his life, but when his Yashica went into the shop a friend loaned him a digital camera. Naively decided to take some action scenes and found that most maddening "feature" of digital cameras – shutter lag.
Exasperating and frustrating
The articles on this topic have been attributed to shutter lag:
1. Activating the camera system
2. The time required for the digital camera to process the image
3. The reaction time of the photographer
The numbers one and three times lag most people who use digital cameras are used. Most have used a camera and I know that the needs of a few milliseconds to concentrate.
The obvious solution is to reduce the aperture to increase depth of field, or the camera lens to the object you want to be in focus and press the shutter button, to "tell" the camera that What to focus, then move the camera to center the image and press for the rest of the road.
The reaction time is human and not much has changed for users of film cameras, and people with experience in taking action shots usually get what they want.
So let's look at number 2, the time needed to process the image.
Time to make the transformation
Image processing (what the camera can be ready for the next) is available in different sizes to pass from the image sensor to flash memory card:
1. Color corrections. The camera has to review every charge transfer device (CCD) sensor element in the picture. It adds green, blue and red to achieve the correct color balance. For a 3 mega pixel camera, the processor has to make 9 million calculations.
2. Sharpness. This increases the contrast and sharpness of edge detection.
3. Compression. This process converts the 12-14 bits of each CCD sensor of 16 bits of "filling" of information and the compression to 8 bits. This compresses the file size to 9 megabytes.
These steps require a tremendous amount of computing time. No wonder Bob missed his shot!
Progress of
There are two ways to capture the action:
1. The method of "execution". If your camera has this mode, you can take a series of rapid shots moving through the event. This requires a camera with a large buffer "to keep the photos for prosecution.
2. Anticipating shots by pressing and holding the shutter button before the event. This requires the ability to predict the future, something most of us do not possess.
THE FUTURE OF FASTER SHOOTING
Course, this would be simplified if micro processing were faster. Even with large buffers, the speed at which data is transmitted to the processor is prohibited by the speed at which data is transmitted from the CCD. Micro processing speed is the bottleneck next.
Clock speeds and higher data transfer speeds to reduce or even eliminate "shutter lag" time. There are several technologies behind the scenes, that offer hope:
1. Nanotube and nanowire technologies. These are the descendants of "nanotechnology", the ability to make small cars nano level, a billionth of a meter in size, rather than a millionth of a meter (micrometer) and offer hope for a speed of 500 GHz clock or more.
2. DNA Yes, you heard right. Computer-DNA strands under which the information is stored and processed.
3. Other materials
• gallium arsenide with a speed much faster than has been used for years for military purposes.
• silicon germanium chips increase the transfer of light signals to silicon. These traditionally have worked best in the presence of extremely low temperatures, but computer simulations have shown that they can do to approach 1000 GHz (1 THz) at room temperature.
• Indium-antimonide. Much faster than silicon
• optical transistor. A glass material known as chalcogenide becomes a switch as its refracting properties are changed. No need to translate the photons in the rest.
• coated viruses. The latest research involves coating viruses with a conducting material. Much higher speeds at the molecular level can be obtained. This gives new meaning to the term "computer virus".
4. Parallel Processing. As we noted recently, the war between Intel and AMD on the number of parallel processors crammed into a CPU, digital camera processing would benefit from parallel processors handling of focus, clarity and compression.
5. Improving the efficiency of instruction, reducing lines of code would make the process more efficient.
HOLD ON AND WAIT FOR THE FUTURE
The real solution to this annoying shutter lag seems to be the material that the processor is built and the advancements in software.
But we have to wait a while 'for this. Although some alternative materials have been around for a while ', everything else is still under research and development. Even when it finally runs out of laboratories that can make your future digital camera cost about $ 10,000 to 15,000 $.
All prices for the ability to take pictures as fast as a camera! However …
Except for the delay, the digital camera is equipped with everything about film cameras, once the photo is captured from the memory card. The new technology will be worth the wait.
Digital camera owners are known for their ability to wait … in hand to deliver desperately trying to capture the fleeting smile of your new baby, or the football lands in the hands of eighteen years later, when he scored the winning touchdown.
Tags » ‘Digital Camera Review’
The secret to buying a digital camera
October 26th, 2009 by Rebel T1iA digital camera is now very useful. Than using a traditional film camera you use, you have a digital camera in its nature, tours, special events and formal meetings is more convenient and fashionable, like most digital cameras are available in models and modern elegant and intelligent. There are also lighter and easier to use than with his old car.
If you do not have one, however, buying a digital camera instead of a conventional one would be a better choice. Besides the advantages mentioned above, the purchase of a digital camera will offer the following advantages:
1. You can take as many photos as you want, such as digital cameras are capable of large storage. 2. Not worry about buying the movie. 3. You can take photos in advance (always a live view LCD), delete unwanted images and take another until you reach the desired shot. 4. You have many options for the resolution, quality and size of the photos. 5. You can connect to your computer and easily transfer data stored therein. 6. You can edit images on your computer before printing. 7. You can select which photos to print or thereabouts. 8. Can be updated to take and store more images on it. 9. You can use to record audio and video. 10. You can connect directly to a printer and print photos without the need to transfer images to a PC.
After deciding to buy a digital camera, the next step could be trouble now is how to buy a digital camera to the right. The purchase of a digital camera, a careful analysis of needs, too. Especially if they are not too familiar with the technical aspects of a digital camera, would you care to research and understand what those pieces of information it has collected half. The purchase of a digital camera starts with actually knowing what you really want. E 'enough to know that you can make a better decision to buy that digital camera.
There are several factors to consider when buying a digital camera. The first is the resolution of the photos (the number of pixels in a photo), next is the memory. The resolution determines the quality of images so if you want to buy only high quality photo resolution digital cameras. The memory of the 'other party (expressed in MB) high resolution determines the amount of low-resolution images or can be stored on the camera.
Since the purpose for which you are buying a digital camera to help you decide more clearly. If you just want a camera that can take anywhere anytime to capture wonderful moments and views without the intention of showing these pictures, you can start with a digital camera with fewer features. How does one learn the art of photography, you can buy a more advanced digital camera.
Of course, your budget is very important. You can not buy something that goes well beyond their means. You can choose a digital camera with fewer features, but can be upgraded in the future. This will help you save money for the average time, without sacrificing quality.
Digital Cameras – good for the environment
October 25th, 2009 by Rebel T1iDigital cameras allow you to save the trees! These are the people, because increasing numbers are turning away from conventional cameras they are unwittingly reducing the use of chemicals that have been before being used to process the film. These chemicals, especially the developer and fixer solutions, serious environmental hazards. More importantly, it is not necessary to print all the photos on a roll, you can print only one or two that you like, which saves a lot of paper.
1. Chemicals
Law requires that chemmicals must be neutralized before disposal. Unfortunately, film processing centers released the most chemicals in flight because of high costs in its treatment before discharge. Many photographers are guilty of this too.
2. International waters
Not the only ones who have broken the law with abandon. Cruise ships in international waters were even more guilty. As images of routine, these ships developed first shots of the passengers and then dumped chemical film processing offshore. No one cared, since no restrictive laws apply to international waters. This is the reason why our oceans and the green bars are dying at a rate faster than tropical forests.
3. Digital Cameras
Now you can thank the producers of digital cameras to save some of the chemicals poured over them before they ship. The same applies to the ponds and rivers, which were previously contaminated with chemicals that leave the lab processing the film and continues the flow of such laboratories in the third world.
4. Inkjet Printers
There are some environmentalists who point the finger at inkjet printers – used to detect fingerprints – and the rechargeable batteries used in digital cameras. Of course, they must realize that few people take the fingerprints of the photographs. To transfer images in more computers. Addition, the cartridges used are recycled or deposited in landfills. Very rarely find their way into water bodies.
5. Rechargeable
Impact on digital cameras are rechargeable – never buy more batteries! Get rechargables. In particular, get NiMH rechargeable batteries with a load of at least 2200 or higher. These last about 8 hours and can be recharged in just two hours. These batteries can be charged up to 1000 times before having to be extracted. Although in theory use the camera every day for a year, even years before having to get new batteries.
Terminology – Digital Cameras
October 25th, 2009 by Rebel T1iIt helps when you learn to use your new digital camera to also know what some of the most common terms mean. Below are many of these common terms defined ..
Automatic Mode – An environment that sets the focus, exposure and white balance automatically.
Burst Mode or Continuous Capture Mode – a series of pictures taken one after the other 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 central portion of the image.
JPEG – The predominant format used for image compression in digital cameras
Lag Time – The pause between when you press the shutter button 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 a piece of plastic that serves to collect light and their concentration on the sensor to capture the image.
Megabyte – (MB) Measures of 1024 kilobytes, and refers to the amount of information in a file, or the amount of information possible
be contained in a memory card, hard drive or disk.
Pixels – color very small units that make up digital images. They also measure pixel resolution camera. A million pixels
adds up to a mega-pixel.
Colors RGB – Refers to the color red, green, blue used on computers to create all 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 detail can be recorded and the big picture can be
printed.
Memory Card – The removable storage device that contains the images taken with the camera, comparable to the film, but much smaller. Also called a memory card from the camera …
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 of light (fluorescent, incandescent, etc,) or lighting conditions at the scene for what appears normal to the human eye.
Things you should know before buying a digital camera
October 25th, 2009 by Rebel T1iIf you are looking to buy a digital camera, you should properly educate themselves on all aspects of digital cameras. There are many types of digital cameras out there all with different characteristics, so you must first ask a few questions before actually spending several hundred dollars for large purchases.
1. What are you going to use the camera?
2. Will be used as part of their work or recreational use?
3. When you buy a mini digital camera or must seek a standard size of a digital camera?
4. How much money are you willing to spend and what is the budget for the costs of digital camera?
Remember, the camera is only part of the cost, you still have to pay for the batteries, computer cables, and memory and types of media to store your photos and video.
Some other things you should consider when it comes to choosing a digital camera suitable is the weight of the camera and the emergence of the digital camera. If you need to take your camera with you during your daily routine or work, you must ensure that there will be the way of what you do. Another important aspect of digital cameras you should be aware of is the zoom function.
There are two basic types of zoom, optical zoom and digital zoom. Optical zoom is the zoom when you press a button and the lens physically moves to zoom in or out. This is the method of zoom you are probably the most familiar. The other type is known as zoom digital zoom.
Digital zoom is a new zoom method that was introduced with the invention of digital cameras and not rely on any moving parts. Basically, the cultures of the photograph you take and then widens, which in effect creates a kind of optical zoom effect. In general, you should try to use more optical zoom digital zoom because digital zoom reduces image quality by a large majority of cases.
If the reason you want to buy a digital camera for recreational purposes, consider the possibility of buying a mini digital camera. Overall, mini digital cameras are not as strong as the standard format cameras, but have several advantages. Obviously, they are portable and very convenient to carry with you on the road. Most of the mini-digital cameras easily in your pocket without any problem, while the standard format digital cameras can be very cumbersome and difficult to carry around sometimes.
Another advantage of having a mini digital camera is the fact that they are great to show to friends and family. Start a conversation with a great, if someone sees you take a picture with a small digital camera, chances are they will stop talking to you a little 'prices and specifications of the camera. Finally, mini digital camera accessories are a bit 'cheaper than standard accessories size so you can expect to save a bit' of money for the purchase of accessories.
Digital Cameras
October 24th, 2009 by Rebel T1iToday people are switching from film cameras to digital models. The reasons are obvious ease with which objects are framed and shot, the images are stored, recorded and displayed. To make matters worse, you can download from the comfort of your home and pictures of the press.
However, if you buy one for the first time, chances are you've lost, literally, to revise the specifications and features offered by many brands out there in the market. Go to the mega pixels, or go by the manufacturers or the price range or …. Possible classifications, so there are many. The following guide is published with the intent of helping to achieve a practical model of FeaturesWeight choice.Various
This factor strongly depends on the use of digital camera. Want to wear one in your pocket or purse, go for the lightness. No doubt they are convenient, but have small buttons, controls and buttons that can make management a bit 'difficult. The largest weighs more and have more features too.Resolution
The cameras are classified as mega-pixel resolution. Reduces the range of cameras and to help solve the beginner, intermediate and advanced groups of them. The range is 0.1 mega pixels to 18 mega pixels and some even more. The key to choosing the right pixel camera depends on how close you want to achieve target.2 mega pixels and less sharp images and details sufficient to print 8×10s and small. Quality copies are not very high, but sufficient enough to be published in emails and websites. These cameras are inexpensive.2 to 6 mega-pixel Given that the resolution continues to grow in this range, the picture quality even better. You can get sharper images at all in escalating price.Eg Canon PowerShot S3, Fuji FinePix V10, etc.
http://www.reviewgist.com/digital-camera-reviews?resolution=0.1-to-5.16 and more mega pixels, but not always good. Keep in mind more mega pixels means larger image sizes, expensive memory cards, and more space in your computer's hard drive.Eg. Canon PowerShot Pro1 Canon PowerShot S80, etc.
http://www.reviewgist.com/digital-camera-reviews?resolution=6.37-to-8.32ZoomOptical-lente enlarge the image is magnified by the lens 3x, 4x, 10x and more, but keep in mind that a very long zoom is subject to camera shake. Use a tripod to cover this problem. 3x optical zoom means you can make a subject appear three times closer. Optical zoom produces images of better quality. You can not get too close to the object, but then a photo editing software can help to reduce the image. Gives better results than using the digital zoom.
Digital zoom is a simulation of an optical zoom, which expands only the central part of the image. The aim is not used in this case. The effect of digital zoom is provided by the internal software. The result is often a blurred image and digitized. You can use both zoom effects on both cameras offer such features.Lens
A bad lens can ruin everything that controls the resolution and additional image processing. So before buying one to evaluate the final image on a computer based on these criteria:
check the overall objective of focus and sharpness, though the corners are sharp as the center
verification of combustion, ie, colored circles and reflections when shooting toward the light source
objective control attachments offer, you can add wide-angle or telephoto lens, accessories to extend the focal length
whether electronic or manual control, zoom, zoom speed manual offers more flexibilityMemory
Unlike film cameras to digital cameras store images in memory. Thus, whenever the memory is full, you can download them and the camera is ready to shoot again. The memory is of two main types: integrated and removable. The lower end cameras have built-in memory. Removable memory cards have the advantage of upgrading the memory, particularly useful when taking pictures in a lot trip.Flash Types
It all started with the photographers lighting a powder keg full tray to illuminate a scene. Digital cameras today come with built in auto flash drive combined with a sophisticated light metering system, exposure control. They are so convenient and easy to use that often do not realize.
Digital cameras are specified by a tracking number that gives substantially the power of flash. The greater the number of guidelines, a greater range of flash utility. With the changes in the speed sensor and / or focal length, the monitoring of changes in number. So the producers, instead of specifying the maximum capacity of flash, with the assumption that the flash is fully charged and the lens opening is wide open.Some common arrangements:
Auto mode is well known! Cameras with the way first red-eye reduction fires a short burst to close the subject's iris, then the main flash, and, finally, the picture is taken.
Fill flash mode to fill the shadows.
Flash off mode, in order to capture the natural light.
The night scene mode sets the foreground subject, without underexposure of the background. For maximum flexibility in choosing a camera flash with an external clamp.
Some models are equipped with only the external flash.
Some varieties have both external and built-in flash units.
Some compact digital cameras equipped with every type flash units.Focus
Most digital cameras have a combination of different ways focus. In automatic mode, when you press the shutter release him and a half, the focus is locked. E 'approach was also confirmed by a color change indicator.
Auto Focus is achieved in different ways. The most common of these is the only way to approach the area. The focus is on the central portion of the screen. In fire mode on the spot, the focus is in the center of the screen. The resumption of slow moving objects can be used in continuous mode auto focus. Be aware of the enormous energy consumption in this Focus mode.Manual-This feature allows you to focus manually by a scene that may or may not be the center of the screen. Select the area that is focused with an indicator of focus of some activation of a cursor button to make the approaches and macro shooting. Some models have a fire ring for manual focus, turn to when the subject is in focus focus.Fixed-This function can be used to their advantage when there are pre-set distance between the camera and the object.
The various combinations of rates of interest are:
Autofocus and manual focus
Autofocus and fixed focus
Auto, Manual and focusCamera fixed type
Standard automatic point and shoot cameras, the models are available with the basic features of those with the controls and advanced options and excellent macro capability. The flexibility with which these cameras can be used as in situations where it is difficult to frame the picture or shot from the level of life makes these models in high demand. This is an ideal interpreter of silence for the shooting in places where a loud shutter clicks is not appropriate.SLR/Professional- more interesting features such as interchangeable lenses, flashes, sophisticated controls and other accessories, these models are designed specifically for photographers and professionals. For example. Nikon D40, Nikon D40x, etc
2FProfessional http://www.reviewgist.com/digital-camera-reviews?cameraType=SLR%
Compact-The features are mild, but small enough to fit in your pocket before you go to the party. These models are relatively more expensive than standard cameras appear similar size. For example. Canon PowerShot SD800, Kodak EasyShare V550 etc
Compact http://www.reviewgist.com/digital-camera-reviews?cameraType=CompactUltra With technology improving at a steady pace the size of the room is getting smaller. Homes size of a credit card, slightly thicker than take pictures incredible. No compromise on battery characteristics, such as liquid crystal displays (as small as 2 inches), an optical viewfinder, a good resolution (some with 7 mega pixels) and good too. For example. Casio Exilim EX-S500, Samsung NV3, etc.
http://www.reviewgist.com/digital-camera-reviews?cameraType=Ultra-CompactBatteryThere two types: those rechargeable batteries. From digital cameras to energy very quickly, especially if you use an LCD screen, it is better to invest in rechargeable batteries. Some digital cameras come with AC adapters, if your does not have one, purchase separately.
Some batteries are:
NiMH batteries are the most sought after today. They are rechargeable, long-lasting, and are available in various designs and compact, with no memory problems.
Alkaline batteries are not rechargeable and do not last long.
Lithium ion batteries are small and recharges quickly.
NiCad if not loaded correctly can have a memory leak.
AC Adapters allow you to keep shooting long after the batteries are dead! Price
Fortunately, you have to spend huge amounts of owning one. Low Range
Even a couple of hundred dollars can get a good camera with video capability and Nice zoom. And they are sub-par models of the past. For example. Nikon Coolpix S5, Canon PowerShot G7, etc.
http://www.reviewgist.com/digital-camera-reviews?Price=0.01-to-237.49Mid-range
Much more features are added, more megapixels, more powerful lenses are available in this range of digital cameras. For example. Nikon D80, Nikon D200, etc.
http://www.reviewgist.com/digital-camera-reviews?Price=237.49-to-599.84High range
These ranges of cameras are mostly professionals capable of representing the image and produce exceptional photos excellent. For example. Nikon D2Xs, Canon EOS-1D Mark III Body only, etc.
http://www.reviewgist.com/digital-camera-reviews?Price=1437.12-to-7999.99