What to Look for in Buying a Dome Surveillance Camera

Of the many types of security cameras available in the market, most commercial establishments prefer to utilize dome security cameras because of their sophisticated design, extensive range of features, and durability. If you are currently searching for the ideal safety and security measures to use for your business, dome surveillance cameras may just be what you need.
Top Features of Dome Surveillance CamerasDome surveillance cameras come in various sizes and with a wide range of features. Be sure to buy the model that's fully capable of meeting all the safety and security needs of your business. To help you make the right choice, use the list of features below for determining your preferences.
Weatherproof and Vandal-ResistantDome surveillance cameras come with heavy-duty housing capable of protecting its hardware from water, dust, and any other damage. Even vandals or potential attackers wishing to tamper with the camera will find this tiny but strong device quite indestructible and a challenge to destroy.
Powerful Image Recording CapabilitiesBuilt-in infrared technology allows dome surveillance cameras to record footage even at dark and resulting images and footage are still produced at superb quality. Even better, some dome surveillance cameras are also capable of amplifying light levels to brighten areas that are located at a greater distance.
Dual VoltageIf you plan to switch use of your dome surveillance camera from one room to another, it's best to look for a model that offers dual voltage options. This way, you won't have any problems setting up your security camera, regardless of the room's voltage requirements.
Wall and Ceiling MountableAnother desirable feature of dome security cameras is how they're designed to be wall or ceiling mountable, whichever suits your needs better. As such, you have more location alternatives to choose from and thereby increasing the chances of picking out the most suitable area for you to set up your surveillance dome camera.
Image Compression and FormattingAdvanced models of dome surveillance cameras are able to automatically compress images or footages recorded, allowing you to save more on hard disk space without compromising the quality of your photos or videos. Also, most dome surveillance cameras will let you choose the appropriate format for your images and videos.
External ControlLastly, a number of dome surveillance cameras come with external controls. You'll be able to modify zoom and focus options from a distance and without making other people aware of what you're doing.

by Phil Washington
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2009 Digital Camera Buying Guide

Reading this article will give you the information you need to choose a digital camera based on the functions and features that it has. It's a digital camera buying guide that will tell you what you need to know. In many ways, cameras with 35mm film are the same as the modern digital camera. In both cases you will find a shutter, an aperture and a lens inside.
The major difference between these two types of cameras is the method they use to get the image. Digital cameras use an image sensor instead of film to capture it, and normally it's a CCD (charge couple device). These are silicon chips that have millions of pixels, which are photosensitive diodes). Each one of these pixels gets one small part of the entire photo. Once the shutter is opened, those pixels get and record the light's brightness. When the shutter is closed again, the recordings from every pixel are converted into a number. The digital camera then rebuilds the image using those numbers, doing a lot of calculations (millions of them) to reconstruct the photo.
When you use a film camera the photo will be stored on the film. But, digital cameras need to use another device to keep photos on them. After the image sensor captures the photo, it will be kept on a storage device inside the digital camera.
If you own a digital camera, you can view the photos you take on an LCD screen that you can find on the camera's back. You can take photos with ease, without carrying film with you. Store everything on memory cards instead!
The great thing about digital cameras is how easy it is to use and distribute to other people. Just a few examples: use email to give them to friends, upload them to a site or use them in a word document.
An even bigger difference from film cameras is the fact that you can also record movies and sound with the latest digital cameras.
A few of the biggest features that digital cameras have
When you decide to buy a digital camera, there are a number of features that you need to know about, and the most well known is the resolution.
The Resolution
The camera's resolution tells you the number of pixels that are on it. When you know how big is the megapixel number, you know how good the camera is (when the number of megapixels is big, the resolution is big as well).
Different megapixels lets you make different size prints. If your camera has 1 megapixel, you can create a 4x6 inch print. A camera that has 1.5 megapixels will allow you to create a print that is 5x7 inches in size. This continues the same way, with the big megapixels allowing you to create bigger prints.
Getting the perfect camera, is never an easy thing, especially with the way digital technology is constantly changing. Fortunately, there are plenty of helpful websites online, that can narrow down your search and help you find the camera with all the features important to you.
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wedding digital photography

One of the moments that most people would really love to preserve is the events on their wedding day. With digital wedding photography you can capture all those amazing moments for everyone to see.
Most wedding photographers have assistants so they can create a wedding album that will be memorable but if you want to take pictures of a friend's wedding, who will help you?Fortunately for wedding photographers they can use an assistant to help them get the right shots but if you're a friend taking pictures, then how do you take good shots of the day?If you want to take photographs of your friend's or relations wedding then you will have to do it on your own because you won't have an assistant like the professionals have. Ensuring photos taken with your digital camera are something special for your friend's or relation on their big day might be a little easier once you have read the tips in this article.
If you only remember one piece of information from this article, remember to make sure that the photographs have a nice background as it is one of the first things you'll notice when you look at them. If there is a pleasant background but it is hard to focus on the couple, you may find it easier to shoot them from shoulder up.
If there is bright sunlight or you are using flash, ask guests who are wearing glasses to remove them just for the shot or as an alternative they could turn their head slightly to the side. If there's a couple or a group that you wish to include in the picture, you should use the zoom function in to get the ideal image but do not shoot against the light so that dark images appear.
Natural, wedding photos always look better than staged ones but difficult to capture when you are too close so a powerful zoom lens is a great advantage. Allays be ready for the next digital wedding photograph because you can't ask people to repeat those unforgettable moments that everybody wants to see again and again.
Probably the most important thing to remember with digital cameras is to have plenty of memory in your camera plus fresh batteries and the best way to ensure this is to always carry spares. Professional digital slr cameras start at 6 mega pixels and very few compacts are now below that so your card will need to be a minimum of one gigabyte to be on the safe side.
Always remember that the higher the resolution used, the larger the size of prints that can be made so always keep a secure copy of your work so you can re-use them in the future. Once you have the images it is only a matter of printing out the ones you want and saving all of them on a CD for a permanent storage or presentation.
How successful you are at digital wedding photography will all depend on your camera and your love for this truly wonderful art.
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Digital Camera Tips For Beginners

Have you ever confused how to operate your camera? Or have you ever confused why you could hardly shoot a beautiful pictures like the professional photographer did?
Here are some tips how to use your digital camera for you, and even a beginner can produce great pictures just like you always wanted.
1. If possible, do not use flash indoors. It will just make your pictures even worse than you have the flash off. It may take longer exposure, but I can guarantee that you will get a better picture.
2. Experiment your own digital camera. Take pictures with different apertures, shutter speeds, ISO, white balance, focus, etc.
3. Try to use another angle of view. Try to shoot children from lower angle or cars from higher angle. Every angle contributes new excitement.
4. Holding your vertically or diagonally can make your pictures look better. I personally like to shoot diagonally, because it leaves me a great impression. Just try it yourself.
5. Every photographer has his own style. Be confident that you can make a great pictures. I prefer not edit my pictures, because it is for me more interesting and challenging.
6. Take pictures as much as you can. There are unlimited possibilities how you shoot. This is a way for a beginner to understand better how use the digital camera.
7. Tripod is a muss for every photographer, especially when you take action in low light condition. It will also help you, if your hands are shaky.
8. Asking your friends who have this hobby or members of photography forum will help you to obtain knowledge faster. If it is possible, go hunting for awesome pictures with them. Believe me because I have a lot of experiences which I obtained from people who own great photography skill.
9. The man behind the gun is always you need to remember. There may be camera limitation, but try to push yourself to pursuit your imagination. A tool have limits, but not your imagination.
10. Get close with the object, unless you have a lens that allows you to zoom rather far. In this way, the object will be more focused and let people recognize what you want to express.
Christofer Yie is a photographer who want to share his photography experiences. Check my site to learn much more about photography and how to be a professional photographer.
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History of Camera

Lensa mempunyai peran yang penting pada sebuah Camera. Tanpa lensa, Camera tidak akan bisa mengambil gambar. Tugas lensa adalah mengambil cahaya dari subyek agar masuk ke dalam fokus sehingga bisa menghasilkan gambar yang bagus. Dalam sebuah Camera tentunya minimal ada satu buah lensa, bahkan dibeberapa Camera profesional ada berbagai tipe lensa hanya dalam sebuah Camera.Seorang matematikawan asal Italia antara tahun 1501-1576, Gerolomo Cardano, memperkenalkan sebuah piringan kaca yang posisinya ada didalam Cameranya untuk menutupi sebuah lubang kecil. Piringan kaca itu dinamakan lensa. Kata lensa sendiri berasal dari kata bahasa Latin, lentil.Lensa muncul pertama kalinya pada untuk penggunaan kacamata. Pada prosesnya selama 300 tahun terus berkembang hingga muncul lensa untuk penggunaan pada teleskop dan mikroskop. Pada abad ke-17, orang-orang berpendapat bahwa tidak bisa sembarang lensa yang bisa digunakan pada camera obscura. Maka dibuatlah lensa convex yang berfungsi untuk menghasilkan gambar yang lebih jelas dan lebih tajam.
Camera obscura merupakan nenek moyang dari Camera yang diciptakan pertama kali oleh seorang ilmuwan Irak yang bernama Hassan bin Hassan atau yang lebih dikenal sebagai Ibn Al Haytham seperti yang tercantum dalam bukunya “Book of Optics” pada tahun 1015-1021.Sebelum tahun 1300, Roger Bacon dianggap sebagai penemu Camera oleh segelintir orang, tapi hal ini dibantah keras oleh ilmuwan dunia saat itu karena Roger Bacon menemukan teropong bintang untuk melihat gerhana matahari, bukan berarti beliau menjadi penemu Camera.Kemudian pada tahun 1660-an, seorang ilmuwan asal Inggris, Robert Hoyle bersama asistennya, Robert Hooke mengembangkan Camera ciptaan dari Ibn Al Haytam sehingga menjadi cikal bakal Camera sekarang ini.Camera pertama yang berukuran kecil dan bisa dibawa-bawa untuk penggunaan fotografi dibuat oleh Johann Zahn pada tahun 1685. Tempat fokus pertama kali pada Camera fotografi pertama digunakan dengan menambahkan kotak yang bisa digeser dan terbuat dari kayu. Padahal sebelumnya sebuah Camera harus dimasukan sebuah plat sensitif di depan layarnya untuk melihat dan fungsinya untuk merekam gambar.Jacques Daguerre membuat daguerreotype yang prosesnya menggunakan plat copper, kemudian William Fox Talbot juga menemukan proses calotype yang berfungsi untuk merekam obyek atau gambar ke kertas.Pada tahun 1826, sebuah kotak kayu yang bisa digeser hasil bikinan Charles and Vincent Chevalier di Paris, dibuat sebagai Camera fotografi permanen oleh Joseph Nicéphore Niépce. Beliau membuatnya sebagai Camera fotografi permanen berdasarkan atas penemuan oleh Johann Heinrich Schultz di tahun 1724.Tahun 1829, Niépce bekerjasama dengan Louis Jacques Mande Daguerre. Empat tahun kemudian Niépce pun wafat, tapi penelitian dan proyeknya terus berlanjut. Hasil dari perjuangan Daguerre seorang diri menghasilkan suatu proses mencetak gambar di kaca yang permanen dan tekniknya dinamakan daguerreotype. Teknik ini kemudian dijual kepada pemerintah Perancis pada tahun 1839. Teknik mencetak gambar ini menjadi tersebar ke seluruh Eropa dan Amerika. Namun ada satu kelemahan dalam teknik ini, yaitu kita hanya bisa mencetak satu gambar saja.Seorang berkewarganegaraan Inggris bernama William Fox Talbot menemukan teknik mencetak gambar yang bisa diperbanyak dengan menggunakan kertas film negatif. Namun demikian hasil cetakannya tidak sebagus daguerreotype, tapi kelebihannya dapat diperbanyak berapapun jumlahnya. Teknik ini dinamakan calotype dan ditemukan pada tahun 1844.Setelah berkembangnya teknik daguerreotype dan calotype, maka muncul inovasi baru yang dikembangkan oleh Frederick Scott Archer pada tahun 1851. Teknik ini dapat mencetak foto lebih cepat. Hanya dalam waktu 3 detik!! Proses sederhananya begini, gambar dicetak pada saat plat film masih dalam keadaan basah. Teknik ini dinamakan collodion.Richard Maddox menemukan gelatin, sebuah bahan yang bisa digunakan untuk mencetak foto untuk menggantikan piringan kaca fotografik pada tahun 1871. Ini merupakan awal dari proses produksi massal film.Teknik-teknik dalam fotografi berkembang pesat selama abad 20 hingga ditandai oleh beberapa event penting seperti dikembangkannya film berwarna (1907), dikembangkannya film berwarna berlapis yang disebut Kodachrome (1936) dan sangat berperannya jurnalisme foto saat pemberitaan di masa-masa Perang Dunia II


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