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Dvd vs BluRay

BluRay vs DVD

With the wealth of visual formats available these days, it is no surprise that it can be a little confusing to choose which is right for you. But read on, and we’ll give you a helping hand with a brief run-through of each.

You will most likely be familiar with the DVD format, as it has been around in Australia since 1998. The DVD was designed to supersede CDs as a new format capable of holding up to 6 times as much data. DVD capacities can range from 4.7GB to 8.54GB, to a rare 17GB in some cases, and have commonly been used for video, audio, data storage, and gaming operations.

Blu-Ray discs represent the next step in the development of data discs, and offer a huge visual improvement over DVD formats. Blu-Ray has been designed to hold 5 times more information than DVDs, as single layer discs can hold up to 25GB, and double layer discs are capable of up to 50GB of information. Bluray discs are therefore formatted to have High Definition 1080p picture, whereas DVDs deliver only standard quality images. This means there is a discernable difference in image quality – with Blu-Ray discs delivering all the up-close image detail and definition you want.

The key difference between DVD and Blu-Ray discs is the way they are read. Currently, DVDs use a red 650nm wavelength laser to read and write data. However, Blu-Ray uses a blu-violet 405nm wavelength laser instead, which allows for a more specific focus. This laser, combined with a tighter track pitch (or the spiral of information coiling around the disc), means that much more information can be read and written on the same sized disc.

When looking at which discs to invest in, your player can come into consideration. Blu-Ray players are a wise investment, as they have the capability to playback both Blu-Ray and DVDs, whereas DVD players are restricted to just DVD playback. Blu-Ray discs are also moving forward in sync with the ever increasing range of HD quality televisions. However, that’s not to disregard DVDs - they are a great, low cost option that will be around for some time to come.

So it comes down to your own preferences. If you are a stickler for high quality vision and huge storage capacities, Blu-Ray is a great choice. If cost and compatibility are more your issue, DVDs will certainly deliver.


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