(Physics) HD is Here to Stay

October 23rd, 2009 Admin Posted in Your source for sciene news and information |

By Quinton Talley

A while back, Sony, Sharp, Canon and JVC announced the creation of a new high definition video standard for video cameras - HDV. HDV utilizes MPEG-2 image compression with a definition of 1080 lines and a 16:9 aspect ratio.

Shortly after that, Sony opened the door to high definition by creating the first HDV camcorder, the HDR-FX1. This release was on par with the launch of the first DV camcorder in 1995, which at the time was a giant step forward for image quality, marking the break from traditional analog.

At the time, consumers were moving from the Hi8 format to DV, which featured much better image quality, along with the ability to transfer to a computer without any degradation of signal. With HDV, the resolution of camcorders can be doubled, from 576 lines to 1080. The compression method is no longer DV, but MPEG 2 instead.

HDV exists in two formats - 1080i (interlaced) and 720p (progressive). With interlaced, the video camera records 1080 lines in interlaced images, which is half images of 540 lines each that are displayed 60 times per second.

With 720 progressive, the video camera records 720 lines in progressive images, which are full images that are displayed 30 times per second. Sony chose to use 1080i on the HDR-FX1, where JVC chose to use 720p for the GR-HD1, which is sold only in NTSC format in the USA and Japan.

The progressive mode format requires a television set that supports it, while interlaced mode is the natural scan mode that televisions use. The question today is which of the two formats deliver the best image quality.

With several high definition video cameras on the market today, the question of image quality all depends on the camera and features, along with your television or method of play back. All high definition video cameras are amazing in quality and playback, which is why they have become so popular is such a small amount of time.

With Sony, JVC, and Canon continuing to develop HDV, you know the technology will continue to get better and better. When high definition first hit the market, it was an instant success. With the integration of HDV, camcorders allow you to do what you never could before.

If you like to record precious memories, a high definition video camera is just what you need. They are very handy to have around, and there are several out there these days for you to choose from - all you need to do is pick the best one for you.

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Where do I Find a Dedicated Server?

By Quinton Talley

So your business has grown leaps and bounds and you have outgrown your shared server. It is time that you had your own dedicated server that will take care of only your website. You need this because of the substantial traffic on your internet website.

So how to find a dedicated server? What should you do? Where should you got? And what is more important, who can you trust? There are hundreds of different ads all over the internet.

The trust question can be cleared up by visiting the different websites of the businesses that are offering dedicated servers and asking them questions. By doing basic research and checking out the websites, you can usually find a many different reliable and honest dedicated servers online.

Before committing to a dedicated server that will host your website, make sure you check out all your different options. There are hundreds of advertisements on the internet for dedicated servers. Some of them seem very inexpensive and others seem way out of your price range. How do you know which ones are honest and will do the best job for your internet business?

By the time you reach the point of seeking a dedicated server, you are probably making substantial income on your website. It is important this is continued, without interruption. It is also important that you do not go through a new dedicated server every month. Do your homework and find the best server for you.

One of the things you will have to decide is how much more space and bandwidth you want. The price of your dedicated server will depend upon the services that you will be getting. If you are planning on a lot more bandwidth and space, it will naturally cost more.

Service also comes into the picture. How much handholding are you going to need to get your server going and your website uploaded to the new server. Those who are more tech savvy may be able to get away with a package for a dedicated server that costs less but offers less personal service.

You also need to know if your current program is going to be able to be uploaded into the server. You will want to make sure the server is compatible, not only with your computer, but with the language in which your website is written.

When you have decided exactly what type of space, bandwidth and service you are seeking, you can shop around online for different dedicated servers that will be ideal for your needs as well as your internet website business.

There are many different directories and ads online for dedicated servers. Before you begin looking, make a list of what you are going to need and then begin shopping. Consider it as if you are shopping for a car. When you shop for a car, you generally know what you are looking for . This should be the same case as when seeking a dedicated server.

Know what you want and get to know the prices and you will be able to find the ideal dedicated server online that will offer you everything that you need for your online website business.

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Choosing the Right HD Camera

By Quinton Talley

If you’ve been looking for a high definition video camera, there are many out there for you to choose from. In this article, we will take a look at some of your options available in each of the different formats.

HDV

JVC, Sony, and Canon all produce HDV cameras of various stripes and abilities. The JVC HD100U shoots 720p, offers a true 24p frame rate, and provides a professional looking form factor, along with sporting the ability to change out lenses.

The two popular HDV cameras from Sony include the HDR-FX1 and the HVR-Z1U. Both of them shoot only 1080i and provide 24p. The XL h1 is Canon’s entry to the HDV roundup. It provides HD SDI output and gives you the option of interchanging lenses. Like Sony, it shoots 1080i without true 24p capabilities.

All of these cameras are 3CCD models and all sport level professional XLR audio inputs, with the exception of the HDR-FX1. Sony also offers single chip HDV cameras. The consumer HC1, which is actually a miniature version of the FX1 is an excellent camera.

DVCPRO HD

on the budget end of the Panasonic spectrum is the AG-HVX200. This widely hyped camera does away with tape based HD recording and will instead record HD to either memory cards or even an attached hard drive. It also offers the ability to shoot all the above mentioned HD resolutions along with 50 and DV25.

Another popular camera for Panasonic is the Varicam which shoots at 720p. A great feature with this camera is the ability to shoot at variable frame rates, which range from 4 - 60fps at 1fps intervals. These different frame rates will allow you to achieve a look similar to that of over cranking a film camera.

HDCAM

Sony couples their HDCAM cameras together under the name CineAlta. They cover a broad range of prices and features, ranging from the XDCAM HD models and the F350 to the widely used and widely popular F950.

The XDCAM HD cameras record directly to Sony’s professional disc media, which is physically similar to Blu-ray discs. These cameras can also record various quality levels of 1080i and 1080p, along with regular SD DVCAM. Unlike other HD cameras from Sony, the XDCAM HD supports i-Link for file access and DV output.

Near the high end of the Sony HD solutions is the F900. It captures both 1080p and 1080i at various frame rates, including 25p and 50i. This is also the most expensive camera from Sony, as it costs around 80,000$!

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