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2012年9月9日星期日

Learning How to Care for Your Digital Camera

A digital camera is a precision equipment, and proper maintenance is the key to prolong its working life. It is not enough to read a digital camera review and find out about the specifications of a certain model. You should also read helpful articles on how to take care of your DSLR properly.

Keep in mind that even if these cameras have self-cleaning sensors, they still need to be cleaned with a soft damp cloth occasionally. If left unclean, the digital camera sensor will attract dirt and dust that can show up as stains on an image. Hence, you have to obtain the appropriate cleaning materials such an imaging sensor cleaning kit to keep your digital camera in top shape. You may also use a soft brush and a clean cloth to eliminate dust on the camera's exterior and on the memory card slot. Dirt can cause lens motors to fail. Nonetheless, you should never attempt to clean the internal parts if you do not know the right cleaning procedures.

Also, most digital cameras are vulnerable to extreme weather conditions. So, always keep yours away from direct sunlight or high temperatures as well as from rain and very low temperatures. You must not let sand and other tiny particles get inside it either. In addition, you must never bring this gadget from a cool and dry place to a hot and humid environment. Gadgets like this have sophisticated electrical systems, and sudden temperature changes can damage them. In case your digicam fell into the water, immediately turn it off and remove the battery. Wipe it dry and boot.

When using your digital camera, do not forget to clean your hands or wear a protective glove because its LCD screen is sensitive. Do not put pressure on it either. When storing it, put it in its proper case or padded bag. Do not place it near the television, radio, and other appliances that have a magnetic field; because if you do, you will lose your data on its memory and its battery may leak. If you want to prolong the working life of your precious gadget, take out its battery when not in use. Throw away used up and defective batteries. Moreover, inspect its parts after every use to ensure that it is in perfect condition. You also have to purchase an extended warranty on your digital camera to be prepared in case it fails to perform satisfactorily.

Enjoyed reading the above post? You can check several digital camera review written by this author.

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2012年7月19日星期四

LCD Enclosures - Protecting Outdoor Digital Signage to -30 Degrees

With the evolution of advertising mediums, all you have to do is look round and you see digital signage every where. Now one of the main issue is when you put digital signage in hostile areas, such as in areas that are extremely hot and humid or extremely cold, the electronics inside the media players and LCD or plasma televisions start to erode, causing problems to occur with the digital signage.

There are three main solutions, one is to purchase an actual television that can cope with these extremes temperatures, however these are very expensive and on a long lead time. They however will either offer protection in only one of the temperature zones, such as working at below freezing or working in temperatures above 120 degrees Fahrenheit, this is not a solution for all seasons.

The second solution is to run the signage hardware in normal conditions and when any extreme temperatures occurs, then relocate the sign to an indoor location, then relocating later when the temperature is more normal. This is not an ideal solution, having to down the electronic billboard system and then having to re set it up inside.

The last option is to purchase an outdoor LCD enclosure, these are fitted with both heaters and chillers, so that a digital signage solution can be installed outside and left, these are ideal for outdoor signage networks with up to 300 electronic billboards spread across different States.

The sophisticated electronics inside the television enclosure provide a safe and secure environment for the standard dynamic signage system, when the internal temperature reaches 60 degrees Fahrenheit, the chiller unit is activated and cools the internal temperature back down, then when the internal sensor detects the outside temperature goes just above freezing the heating element automatically comes on and heats the unit internally, preventing any humidity or condensation build up inside the enclosure.

The above solution allows businesses to locate outdoor signage even in areas that are susceptible to extreme temperatures from -30 to 140 degrees Fahrenheit, giving the digital signage integrator the piece of mind, that their hardware and solution is protected.

Dave is an expert in the field of digital signage, as well as owning the leading European manufacturer of outdoor LCD enclosures, that supply several tiers of digital signage integrators throughout the world.

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2012年5月8日星期二

Product Review on the Pentax K200D 10.2MP Digital SLR Camera

For most people buying a camera of this nature, it is likely that you are not a camera aficionado and do not understand all the technical jargon that you read in most professional reviews. Of course, there are many who do understand it; that's clear when you read some of the user reviews on this product. So for a novice photographer, who may be just use to inexpensive point-and-shot cameras, and is moving up to an SLR, you might have trouble decoding a simple user review let alone a professional who wants to show off his or her tech savvy.

But, for those who do not have expertise in camera technology, I am going to write this review with you in mind and point out the technical details of this camera and try my best to explain what in the world it all means.

So let's get started. First off, this Pentax K200D has received an uncanny amount of 5 star ratings. (62 to date) vs 0, with a capital "Z", 1 and 2 star ratings, with only 2, 3 star ratings, an amazing feat for any one product. The only drawbacks this camera seems to have, is the speed in which it takes to reset and move on to the next photo you want to take.

What does that mean for you? If you are in the market for a camera to take sports action photos, and you want to click one right after another, this camera may not be for you. You will have to wait a couple of seconds while the camera resets and refocuses for the next shot.

Speaking of focusing, the auto focus setting is an above average setting for this camera, which for all intent and purposes is fairly quick. There are other brands out there on the level of this SLR camera that may be quicker in response, but are lacking in the more important categories, if your needs do not require fast action shots this camera is one of the best on the market.

There seems to be a variance on the auto focus setting in a few of the reviews I've read. One in particular mentioned that with the auto focus setting he was getting 2 out of three good pictures, with one out of the three a little out of focus, but not to the point where the picture is unacceptable.

Whenever you read a review, you must keep in mind everyone has different needs and tolerance points. You must consider your personality; are you a perfectionist? I know I am, and I must assume that the reviewer in this case is, as well. Also you must consider whether this particular individual may also be an impatient type of person and doesn't let the camera have the proper time to fully refocus before snapping the next picture.

In that case, this camera may not be for you, you may need to look for a further upgrade or another brand that is a little quicker in this regard.

Let's take a look at some of the features of this SLR digital camera. With 10.2 megapixel CCD sensor, the Pentax K200D offers superior image resolution with maximum control over noise. And with body-based Shake Reduction, the Pentax SLR system will stabilize your shots, providing maximum flexibility with no compromise in optical quality. It increases your handheld shooting shutter speed range by 2.5 to 4 stops for blur-free pictures, and is compatible with every Pentax lens ever produced.

Which brings me to this next point, Pentax has manufactured over 25 million lenses in the last six decades; all DSLR bodies offer backward compatibility with every one. With some of the older screwmount lens, you may need an additional screwmount adaptor, but for the most part, whichever lens is used, whether the most recent lenses or a classic screwmount, it will faithfully capture the image desired.

The body of the Pentax has 60 seals to protect the inner components against humidity, moisture and dust particles. Coupled with the durability of a fiber-reinforced polycarbonate body and a stainless-steel chassis, and you can keep shooting even in harsh conditions, with a very manageable weight, and a comfortable grip design, this camera is easy to handle.

You can also expect to get the right exposures with the settings you want. Auto Picture mode automatically calculates photographic factors to pick the best picture mode. The Scene modes offer a selection of eight modes specialized for alternate conditions. Plus, Sensitivity-Priority AE (Sv) mode is designed to automatically select the optimum combination of aperture and shutter speed for a user-selected sensitivity.

Aperture refers to the diaphragm opening inside the lens. This opening regulates the amount of light that is allowed in for optimum exposure. In SLR cameras, aperture size is usually calibrated in "f-numbers" or "f-stops". Those are the little numbers engraved on the casing of the lens. Each of these values represents one times the amount of light that is needed. For example, an f16 setting with allow 1X the amount of light than a setting of f22.

Getting back to our features, next we have a 2.7 inch high-resolution, wide-view LCD monitor with a 160 degree field of view of your subject in 230,000 dots, which allows for more precise playback. The Prime image processing engine maximizes image properties and allows custom adjustment of image parameters, such as truer color tones, a wider dynamic range, and natural-looking high ISO images.

The 230,000 dots is the amount of pixels that the LCD screen is made up of. The ISO is the number indicating a digital camera sensors sensitivity to light. The higher the sensitivity, the less light is needed to make an exposure. Digital cameras automatically select the ISO but most have a setting to change it manually. Auto ISO generally works best for bright scenes.

With Enhanced Dynamic Range mode, this camera gives you 200% more dynamic range, which brings out detail in the highlighted portions of your image while maintaining detail in darker areas. Dust Reduction and Dust Alert features eliminate the need for time-consuming retouching by sealing against dust and determining if and where any dust remains after the system is activated.

Advanced 16-segment metering and 11-point AF, with 9 cross sensors, ensure perfectly exposed and focused images, even in the most difficult lighting conditions. Custom Image modes, with six preset options, offer superior control of how the PRIME processor develops images, and can be further modified to meet your needs. Get beautifully processed images in any shooting condition.

In addition to a wide range of preset white balance options, take advantage of full manual control. Every preset and manual white balance setting offers fine adjustment control, giving you powerful options to tune the white balance exactly as you need it. The K200D offers 23 custom functions with 52 individual settings, ensuring that you can fully customize the camera to suit your individual needs.

And lastly, this Pentax K200D SLR camera runs on standard AA size lithium batteries. This is a real nice feature, and comes in handy when you are out taking photos and your batteries run down. The convenience of these standard batteries is that they are easy to find in most any store. This is much easier than trying to find a specialty store for a custom camera battery.

So there you have it. I know it's a lot of information to digest, but this camera is chock full of features and comes highly recommended by those who have already taken the plunge and purchased it. If you would like to see more information on this camera, like user reviews with the pros and cons that may be of interest to you, just click on this link to Electronics Review Central [http://www.lcdhdtv-1080p.com/CameraProducts/Pentax-K200D.aspx], and you will get all this, images of the camera, purchasing information, and more.

I hope this review was helpful to you. Until next time...

Russ Schmidt

C.E.O., Electronics Review Central

Russ is founder of Electronics Review Central [http://www.lcdhdtv-1080p.com]. The most up to date reviews on the top rated Electronics. We give you all the information you need; manufacturer details, customer ratings, user reviews, and the best pricing available, to help you make the right electronics choice for you!

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2012年5月3日星期四

The Nikon Digital SLR Cameras

In December, the latest contribution to the new Nikon Digital SLR D Series camera was commenced and held resemblance to the other D series cameras. Although this camera is designed with the professional photographer in mind it would be just as well suited to any photography buff. The innovative megapixel sensor has been redesigned in such a way that the images can be taken in awfully low light conditions. Due to the redesign, it now permits high definition movie capture and can successfully capture clips at 24 frames per second, including sound in stereo. This feature now enables a professional photographer to select any still frame and then use it as a picture.

Of all the incredible features, one feature that can prove very useful is that the latest D series go as high as 24 megapixels. This now allows you to click pictures in the darkest surroundings and still get a very clear picture contradictory to the images that were hard to see in the past. Nature photographers are also benefited by this design as it provides with silent shutter release which considerably lessens the sound of mirror return. This is crucial for photographers who need tranquil silence when clicking pictures.

Some of the more recent Nikon Digital SLR D Series cameras include the D3X 24.5MP, D3S, D700 12.1MP, D300S 12.3MP, D90 12.3MP, D5000 12.3MP, D3000 10.2MP, and the D40.

Professional photographers, who wish to have a wide selection of images to choose from, will be benefitted from the ability to lift pictures from the high def movies. This feature would definitely be valuable for sports and news photographers as their job depends highly on variety of images they produce. They are entitled to receive more options as they can use techniques other than flash to enhance the quality of their pictures. This camera will also help to effortlessly click pictures of fast moving subjects.

The new Nikon Digital SLR D Series comes with a unique crop mode that lets photographers to select from 5:4, 1.2 and DX. This helps to minimize the file size and also helps lens magnification. For manual use you can opt from 5 lighting options and 4 control levels. Finely tuned camera sensors can help you to click sharp and noiseless pictures even if the objects are almost invisible to see. An image sensor function, which uses 4 different frequencies to clear the vibrations, is embedded in the new D3S. This will greatly reduce the static dust on the low pass filter. This has resulted in keeping the viewfinder without any change.

The camera is designed in such a way that it can resist severe changes of temperature and is weather sealed with lightweight magnesium construction. Quite a lot of O-rings are embedded in the camera help to shield it from dust, humidity and electromagnetic interference. The camera also has built-in two CF card slots, which lets that photographer to choose diverse tasks for each slot. You are therefore equipped for storing a large amount of data and also can use one card as a backup for the other. The rechargeable batteries are designed in such a way that they would last longer than normal batteries. The Nikon Digital SLR D Series camera is termed as lightweight as it weighs just a little over 2 pounds, and hence it is easier to carry it. It also offers you numerous optional accessories.

Don Casas enjoys amateur photography and digital image editing. If have an interest in a Nikon Digital SLR Camera or would like to read about digital cameras in general please visit DonsDigitalCameras.com.

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2012年5月2日星期三

What is a Digital SLR Camera and How Does it Compare With a Digital Compact Camera?

The term digital SLR stands for single lens reflex. It is so called because the SLR cameras use a mirror that is placed behind the lens.

Although SLR cameras for capturing still images have been in use for quite some time, those that could capture both the stills and the videos were introduced in 2008.

Earlier the SLRs were used only by the professionals. They were not very common and were costly as well. The good news is that the digital SLRs are becoming cheaper as the time passes and coming within the easy reach of even the amateur photographers. You can buy an SLR at the price of a high end digital compact camera.

How does the digital SLR work?

When the light enters through the lens, it falls upon the mirror. The mirror, in turn, reflects (throws) the light upon the focusing screen. The light passing through the focusing screen falls upon a block of glass called pentaprism, which reflects the image that can be seen on the viewfinder. When you take a photo, the mirror flips up opening the shutter which exposes the digital sensor to light.

What- you- see- is- what- you- get photos

The SLR uses the viewfinder to compose the photo and adjust the focus. You can, thus, get the photo of the original as you see it on the lens.

SLR camera allows for a wide range of lenses with different focal lengths. You can change the lens whenever you like. This is what makes the SLR ideal for serious photography. Moreover, the image sensors of the digital SLRs are large and produce high quality photos.

Lightness and compactness vs. versatility and image quality

An attractive feature of the digital compact cameras is that they are cheap, light, compact and easily portable. You can just pop in the compact camera in your purse or pocket.

The SLRs are weighty and voluminous. Some of them are tank-sized for professionals. But they provide the invaluable advantage of accommodating a large range of lenses and accessories that were originally designed for film SLR cameras.

Of late, new generation light weight ultra compact DSLRs have also been introduced in the market. They have small lens and weigh around 20 oz / 0.5 Kg.

While the crispness and sharpness of the photos taken with the digital compact camera and SLR camera in broad day is by and large same, the SLR scores over the compact camera when you have to shoot in dim light or capture the fast running scenes of actions. This is because the SLRs have high sensitivity larger sensors.

Anti shake/vibration designs

The photos shot with non-SLR cameras in dim light or with long telephoto lenses may be blurred. The reason is that the camera gets shaken during the exposure. The SLRs are equipped with Image Stabilization (IS) systems that protect them from the impact of motion during exposure. Therefore, the photos shot with SLRs even in dim light or at long focal lengths are sharp and excellent.

Speed

What makes the SLR much superior to the compact camera is its speed in taking pictures, which makes it ideal for action photography as there is a zero lag time. Even the entry level SLRs shoot faster than the best compact cameras. So you can easily shoot both a sleeping and a running tiger with this camera.

Dust Removal mechanism

If you have to shoot in arid, dusty or even in humid and damp conditions, no camera can beat an SLR. They have inbuilt dust removal systems that keep the sensor clean. They have weatherproof seals and solid magnesium alloy cases.

High Definition (HD) videos for HDTVs

This is another advantage of SLRs over the compact cameras. They can shoot High Definition videos. They come equipped with HDMI ports which allow the camera to be directly connected to the TVs. You can view your videos on the TV.

So which camera should you buy?

It all depends upon your needs. If you want speed, exquisite professional looking photos even in dim light and more control over the photos and are not bothered about weight and volume, go for an SLR. If you are just an occasional photographer wishing to carry the camera in your pant pocket, you can buy a compact camera.

Please visit my Best Digital Cameras Guide [http://best-digital-camera-resource.blogspot.com/] to learn more about digital cameras and photography.

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2012年3月6日星期二

6 Main Digital Camera Enemies

1. Sand and Dust

There is nothing that frightens me more than the thought of sand getting into my camera. Cameras have moving parts and to get something as gritty and abrasive as sand into them can quickly put your camera out of action or at least damage it so that you end up with scratches through it.

Ultimately the only protection against sand is not taking your camera to sandy places. Of course this is not particularly feasible and you'll need to do what you can to keep sand and your camera separate.

Sealable bags are great to travel with, cleaning brushes to get those stray grains off your camera can be useful and cleaning clothes are helpful.

Always be particularly aware of your surrounds and things like wind or people kicking balls or throwing Frisbees when you're changing lenses, memory cards and batteries as these are high risk moments that sand just loves to swoop in. Also - learn to think ahead about what lens you might need so that you can change it inside in a more stable environment before hitting the beach.

Dust is a more subtle attacker in that it generally won't scratch your moving parts - but it is just as damaging, particularly when it works its way into your camera's inner parts and settles on your image sensor.

Also if you have a DSLR consider getting it's image sensor professionally cleaned (or learn to do it yourself - with care) every now and again if you do find marks on your sensor (you'll notice them most at small apertures - to test it, set your camera to it's smallest aperture and shoot at a white wall or ceiling).

2. Moisture and Water Moisture attacks cameras in numerous ways.

At it's most extreme it attacks as water which has the ability to quickly end the life of your camera (I regularly get emails from digital camera owners who've dropped cameras in all kinds of liquids including the ocean, baths, rivers and even toilets). Use you camera's wrist or neck straps to keep your cameras out of water and always be aware of where you put it an how it can be knocked.

A more subtle attacker when it comes to moisture is condensation. Particularly noticeable is when you move from one temperature to another with your camera (for example from air-conditioning to humid ones). Investing in silica gel packs is one way to help with this as they absorb moisture in your camera bag. Some people suggest putting it in a sealed plastic bag when moving between temperatures - this might work well but is not particularly practical in many situations, especially when you have a large camera. Ideally you want to warm your camera up naturally and slowly - it's definitely a challenge. Other than that - wipe off your camera regularly when in humid environments.

3. Salt

While the beach presents photographers with wonderful photographic opportunities it also can be a dangerous place with many digital camera predators - not the least of which is salt which has a habit of getting into your camera and lenses and causing all kinds of problems (including corrosion).

Fight the impact that salt has on your camera by wiping it clean at least once per day while shooting in salty places.

If you have a DSLR use UV filters on your lenses to give an extra level of protection and avoid opening your camera up (to change batteries, memory cards or lenses) as much as possible. When not shooting, keep your camera safely in your camera bag and be particularly aware of positioning yourself in sea spray on windy days.

4. Sunscreen and Insect Repellent

It is important to protect yourself from the elements of sun and insect bites when shooting outdoors, however some of the things that you'll use to do it can cause your camera harm. Sunscreen is generally oily and insect repellent often contains chemicals that you wouldn't want to get in touch with the more delicate parts of your camera.

The way to limit the impact that these things have on your camera is pretty obvious and largely involves keeping those parts of your body that come into contact with these things clean. Wash your hands in fresh water after applying sunscreen and repellent and you'll go a long way to keeping your camera clean. If you do get your camera greasy make sure you clean it off as quickly as you can.

Lastly - don't fall into the temptation of putting sunscreen and repellent into your camera bag. I know it's tempting so that you don't have to carry another bag - but it's really not worth the risk as a leak could end your camera's life. If you do travel with them together make sure you have a sealed bag for the liquids.

5. Thieves

Another enemy of expensive photographic equipment is the thief when you least expect it will swoop in and steal your gear away from you - leaving you feeling frustrated, violated and wondering what you did to deserve it.

Always be aware of where your gear is and how accessible it is to others. Get yourself a camera bag that doesn't scream 'I've got an expensive camera in here!', for instance with big labels "Nikon", "Canon" etc.

Keep your cameras on your body if in a risky environment, keep your bags zipped up and well fastened, consider having your bag on your front rather than your back in high risk situations, insure your gear and try to be selective and not every travel with too much of it at any one time.

6. Bumps and Drops The downfall of many cameras comes quite literally when they are dropped or bumped into other hard objects. While some cameras now come with shock proof casings the majority of cameras do not and need to be treated as delicate objects.

Use a padded camera bag or casing (and use it when your camera is not in use, be aware of where you put your camera, be careful when passing it from one person to another etc. Also check your house and contents insurance to see whether it covers accidental damage (many do). It's just common sense really but I'm quite amazed at how often silly accidents end the lives of expensive pieces of equipment.

Need more information? Like digital photography?
Visit our Web-site http://www.photo-mentor.com

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2011年12月17日星期六

Learning How to Care for Your Digital Camera

Enjoyed reading the above post? You can check several digital camera review written by this author.

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