That is why there are still so many people who ask for a Proxima and not a projector. A proxima is a brand name and not a description of a piece of equipment. The word "projector", however, is sometimes not used because of its close association with movie projector and overhead projector.The opposite also applies where many people still ask to hire an overhead projector.It is extremely rare these days to find any overhead projector hire Johannesburg companies. The overhead projector is simply a box with a glass lid to place the slide on and a mirror to direct the projected image.The technology is not manufactured anymore and the slides and pens used for them are becoming rare too. It is simply not viable to use an overhead projector anymore.It is also very difficult to transfer computer information onto the transparency slides. For this reason, data projector hire Johannesburg companies have become more popular.
To understand the difference between a video projector and a data projector , we simply have to look at semantics.The correct term is "video data projector" or"data video projector" This shows that they are one and the same. What makes the difference is the way they are used. As a result of most corporate projector use, being to connect to a laptop or computer, which is considered a "data" device, the term "data projector" has become widely used.On the other hand using a projector at home or in the work place to watch movies or video clips results in the device being called a video projector.
Where the specifications start to show up as part of this difference is in whether the projector is intended for home use or conferences.
As much as HD or 1080P has become a standard for most video, this does not mean it is what you will find it in either home or office use.
The reason is that 1080P is a type of wide screen, while most laptops and DVD players were not set up as wide screen devices until recently.
The result is also from a cost perspective.While companies have larger budgets for Av equipment, home users tend to have smaller budgets.
This means that SVGA (super VGA) projectors often are used for home use and XGA projectors are used for corporate use. You might ask why HD is not used in the corporate environment that much.The reason is that many projections are done on very large screens and at distance from the viewer.That makes the difference between HD and XGA very difficult to notice. When you are close up to a screen, the pixals are easy to see while just a few steps back can completely hide them.
As HD is still a fairly new introduction to projectors, the cost does also have an impact. HD projectors can be more expensive than equaly bright XGA projectors.
Also what is important to note is that it is not realy a connectivity issue. While many laptops originally had VGA connectors, they now mostly have HDMI connectors.
The HDMI connector however does not designate a projector to be HD but simply allows the conectivity of HD devices to XGA projectors.
Therefore whether you laptop is HD or not, the XGA projector can handle it.projector hire johannesburg companies who supply rental projectors will mostly supply XGA with HDMI inputs as well as VGA (XGA)
