Digital cameras use a CCD sensor to convert light energy known in pixels. The dust that accumulates on the CCD pixels can result in blacks or imperfections in the picture as blocks of energy from light that strikes the parts of the CCD. I will review some solutions to eliminate dust on the CCD.

The CCD is located behind the mirror in a digital SLR camera SLR. When you take a picture of the mirror moves and lets the light through the lens strikes the CCD, which converts light into a series of pixels with digital photography. Most of the time the camera is closed and the dust can not enter. Some cameras can not be completely sealed against dust ingress of dust resulting from that body even with the camera lens installed. However, in many cases, the majority of exposure to dust and when the lenses are replaced. Meanwhile, the device is open and exposed to air and dust.

To minimize dust on the CCD sure to reduce the time in which the device is open and exposed to air. For example when changing lenses make sure that you are in a relatively clean environment and that you have the second lenses handy. Try to avoid changing lenses in windy or dusty. Do not take the lens of a camera and leave the body open and exposed, either install additional lenses or put a seal on the body to prevent the ingress of dust.

Even with care the dust will eventually find its way into the camera and the CCD. There are several ways to get rid of this dust. Depending on the camera some of them will not be available for you.

Active dust removal:

Most SLR cameras include a new kind of active mechanism of removal of dust. The most common is the anti-dust vibration. This solution eliminates the vibration sensor dust in high frequency for a short period of time. Vibrates the CCD will fall dust off the CCD or “dancing its way” from the CCD. Several cameras turn the anti-dust vibration at different times. Some cameras turn on whenever the camera is turned on, a certain period of time each is idle and sometimes when the camera is turned on and off switch. Other cameras turn vibration periodically or allow the user to activate it manually.

Cameras include an image stabilizer based on the movement of the vibration sensor typically include dust, because they already understand the mechanical part: a motor that can move the sensor and then the anti-vibration, the powder is added only software.

Passive dust prevention:

Passive solution that attempts to eliminate some of the causes of accumulation of dust on the CCD. The main reason that attracts dust to the CCD is static. Some manufacturers add an anti-static coating on the outer layer of the CCD (the level is generally low-pass filter). With the CCD is less likely to attract dust due to its static.

Manual dust removal:

Manual removal is simply a way to manually clean the CCD. When placed in manual wipe the camera moves the mirror and keeps it in a position where the CCD is exposed and is accessible. Right now, you can try to blow the dust from the CCD, for example using an air compressor. You can also use a special cloth to clean the CCD, but be very careful when you do it and be sure to read the manufacturer’s instructions for how to clean the CCD with no damage. Unless you know how to clean the CCD, it is preferable not to try to clean as it can be easily damaged.

All methods of dust control have their limitations. Dust or other material or adhesive is very difficult to clean, if not impossible to clean. The removal of dust from the CCD is completely impossible, but applying the treatment and the characteristics of dusts from imperfections which photos can be avoided. For the casual photographer, built-in active or passive anti dust features should be sufficient and manual cleaning won’t be needed.

In some respects, a digital SLR makes achieving a good composition a little bit easier, even if the eye and the skills of the photographer the ultimate responsibility. Some photographers say, with justification, that the composition should be exactly the same good thing if you’re using a digital SLR or less expensive point-and-shoot camera. Other photographers say that people need to spend more time with a DSLR. No significant difference between composing pictures with a digital camera snapshooting and a single-lens reflex, the main one is that you can do.

Your basic non-SLR camera might rely on a tiny LCD (liquid crystal display) that is 3.0 inches diagonally to the max (but probably a little smaller). This LCD screen is easily washable in the light may be too weak to see under low-light, and is grainy and the subject of ghost images if the camera or subject moves. May see only 85 percent or less of the actual subject matter, and probably turns off after a minute or two, because the hogs so much energy. And this is good news.

The bad news is that often these cameras have a viewfinder which is even worse than the alternate monitor. The optical viewfinder is a small window that not only shows only a portion of the real shows you the view is not centered. Depending on the position of the optical viewfinder, you can seduce in cutting the top of your subjects and perhaps a bit ‘on the right side as well. Paragon of this technology does not show the depth of field even though little, as the LCD.

And the situation worsens. The trend these days is to eliminate the optical viewfinder for SLR cameras not entirely, forcing snapshooters to hold the camera at arm’s length so that the device sometimes end up in the general direction of the person they want to shoot, rather than creating a thoughtful composition.

Much easier to think of as the typical dSLR makes the job of creating a photograph. Probably the camera viewfinder shows 95 percent of the actual picture with a magnification of 0.75x to 0.95x size to a normal focal length (more or less the equivalent of 45-50 mm). You have a good idea of the depth of field by default, and usually you can press a depth of field preview button to obtain a better representation of what is in focus and what is not. A digital SLR viewfinder is live all _even when the camera goes off, and the view winks alone for a split second during the exposure. There is no ghosting. It was never in danger of cutting the head your subject’s.

So, coming with a good composition when shooting with a point-and-shoot camera is more problematic, is a direct challenge. Since a DSLR makes it easy for you to compose images in the first place.


Order from a wide range of digital SLR that are currently on the market can be a little confusing. If you are not insurance options you really need and options that are best left to professionals, therefore, could end up much more of what you buy camera.

Worse yet, you cannot buy a camera that would make both. The best place to start your search is by reading some ratings and reviews on a PC World magazine.

For those of us that aren ‘ t quite safe, however, the amount of technical information on the subject can be confused and alarming. Many people feel overwhelmed quantity of information on digital SLRs and other cameras. These people often end up buying a lot of software or hardware they ‘ t need and much to pay for the package.

The you first need to know is what you want pictures of. In this way, you can decide which digital SLRs is suitable for work and limit the choice.

If you do very night shooting, for example, comfortable you a camera that makes shooting dark well.

The truth about most of the digital SLRs in the won of different t say companies market are all essentially the same. SLRs digital are all capable of great pictures and give what that seeks to you.

However, there are small details with each that can make the difference in the types of images that you want to take. Some digital SLR are better suited for shooting action, while others are perfect for the registration of landscapes.

An abbreviation for single lens reflex, SLR photographer offers the opportunity to acquire exactly what you see. Given that there is an objective involved, the image on the screen or the optical viewfinder is exactly what will be included in digital format.

Often with film cameras, obtain cutting heads or people are exprimidas by the side of the image, because the film can ‘ t capture the entire image.

Order from the various digital SLRs on the market, taking into account focus and search for a digital camera you like. Make sure that you hear the camera on his hands and look through the viewfinder screen and see if you can understand the interface.

If you buy the new SLR digital Nikon or something from another company, you must make sure that is comfortable with the product to take home.

Another reason why digital SLRs have improved performance is that they’re easier to use, so you, as the photographer, can work faster while you shoot.Most point-and-shoot cameras have to be configured for consumers who are more interested in grabbing a quick snapshot than investing some artistry in creating a photograph.

Moreover, point-and-shoot cameras tend to be designed by an engineer who did a really, really good job adding photo capabilities to the vendor’s cell phone line last year, and who obviously must be the best choice to cobble together a full-fledged digital camera. So, like a cell phone, non-SLR digital cameras tend to have most of the controls tucked away out of sight in the menu system, where the average consumer never has to see them and where the photo enthusiast has to hunt for them.

Digital SLRs, on the other hand, are always designed by a team of engineers with extensive photographic experience. They know which controls are essential and which can be buried away in the menus because you access them when setting up the camera and maybe once a month (if that) thereafter.

Digital SLR designers know that you don’t want to go three levels deep into a menu to set the ISO sensitivity or adjust white (color) balance for the type of illumination you’re using. You want to press an ISO or a WB (white balance) key and dial in the setting without giving it much thought. You don’t want to activate an onscreen display to set shutter speed or aperture_ you want to have separate dials for each. Nature intended zooming and manual focusing to be done by twisting a ring on the lens_ not by pressing a little lever and letting a motor adjust the lens at its own pace.Simply having a camera that operates like a camera instead of a DVD player makes your picture-taking much easier and faster.

Related Blogs

• Related Blogs on A DSLR works like a camera