Projector Zoom Lenses: Manual Zoom Lens
Most projectors have a zoom lens, allowing the adjustment of the image size without moving the DLP or LCD projector. A projector with a zoom factor of 1.2 xs will allow you to adjust the picture by only 20%. Look for a DLP or LCD projector with a higher zoom, as it will allow you to present an image that will match most any screen size.
Some zoom lenses are maneuvered manually. For these manual zoom lens projectors, you typically adjust the zoom above the lens.
Projector Warranties: Swap out Warranty
This warranty is the best type of projector warranty, but not the most common. If your digital projector is in need of repair, a technician will first determine the problem over the phone. Next, you can send the digital projector to the manufacturer to fix and at the same time, they will send to you a loaner projector to use while yours is being repaired. You usually receive the loaner projector the next business day. The loaner projector is typically a used projector, but it will work well until you get your projector repaired. Obviously, once you get your original digital projector back from the manufacturer, you are responsible for returning the loaner projector.
Disadvantages to Wireless Projectors
With the advantages that wireless projectors offers, there are a few disadvantages as well.
1. With wireless projection, there will be a slight delay when you give the projector a signal.
2. You cannot project full motion video in real time when projecting wirelessly.
3. The wireless projector will cost a little more than an equivalent projector that is equipped with standard cabling.
4. There are possible security issues with wireless projecting.
Projector Warranties: Dead on Arrival Warranty
Several projector manufacturers offer a projector warranty protecting you if you plug in your new multimedia projector and it does not work. This situation is rare, but it does occasionally happen. With the Dead on Arrival Projector Warranty, you simply return the non-working projector and the manufacturer will rush another new model multimedia projector to you.
Projector Zoom Lenses: Digital Zoom Lens
Most projectors have a zoom lens, allowing the adjustment of the image size without moving the DLP or LCD projector. A projector with a zoom factor of 1.2 xs will allow you to adjust the picture by only 20%. Look for a DLP or LCD projector with a higher zoom, as it will allow you to present an image that will match most any screen size.
A digital zoom lens on a projector allows you to further move into the frame by having the DLP or LCD projector continually resize the image. It is a nice feature to have in conjunction with manual/power zoom because as you move into the frame, the screen size remains the same.
Advantages of Wireless Projectors
Wireless projectors are becoming more widely available as more people are using wireless in their laptop computers and other technology. The main benefits of projecting wirelessly is as follows:
1. Cabling issues are eliminated which makes your workspace tidier, less confusing, and signal loss through cabling is no longer a problem.
2. Another advantage of projecting wirelessly is that you can switch between multiple PC servers easier.
3. Another advantage of wireless projectors is that the presenter will also be able to have better mobility while presenting without walking around or tripping over wires.
Which wireless projectors are the best for your application?
