Zoom Projector- If you are a professional on the go who is purchasing a mini projector for your presentations, you will want to read this article. By the time you are finished you should have a good understanding of what the best zoom projector looks like and on what to look for when purchasing business projectors.
You will have a good grasp on why both zoom and focus are important and how projector zoom relates to size and brightness of your projected image and to the readability of the screen and your message by the audience.
We'll talk about what a zoom projector is and how zoom differs from focus in a zoom overhead projector. Next, we'll explain how zoom relates to the brightness of the screen and why having a zoom is important for a mobile professional who routinely presents to audiences.
Armed with this easy and quick information you will know what to look for in the zoom projector specifications and know how to pick a good zoom projector tailored to your needs.
What is a zoom projector?
A zoom projector is the type of projector where you can adjust the size of the projected image on the screen by adjusting the projector zoom lens in the zoom projector itself. If you are familiar with photography, the zoom projector can be likened to the optical zoom function in your digital camera or in the objective lens in your camera.
By employing the zoom function in a zoom projector you will be able to change the size of the projected image on screen without moving the zoom projector closer or farther but keeping it put. The range of zoom is important.
Many zoom projectors have 1.2-1.3 zoom range which is good. Some zoom projectors have the zoom range of 2.0 or more which is even better. With a zoom range of 2.0, for instance, you will be able to change the size of the image by a factor of two without repositioning the zoom projector.
How is zoom different from focus?
The same zoom projector lenses are also used to focus and autofocus the image on the screen. To a good degree, focus does not change the size of the screen only the sharpness of the image.
In contrast, the zoom function changes the size of the image. Of course, after each change of zoom you need to focus or autofocus the image on the screen.
Again this can be likened to the focus or autofocus function in your digital camera. Regardless of the zoom level, you do want to keep your image in focus.
How does zoom relate to brightness and size of the screen?
The short answer to that is simple. With the same projector, as the size of the screen goes up, the brightness of the screen goes down, sometimes appreciably. Our age of convenience is reflected in today's easy-to-manage projectors. Some of the newest mini projectors have durable diode-based lamps which, however, do not have as much power and luminosity as traditional bulb lamps.
So you are faced with the fact that you need to move your projector closer to the screen in order to increase the brightness of the image. When you have a zoom projector, you do not need to do that. Next, we'll see how having a zoom function can affect a mobile professional ready to present in a new environment.
Why is having a zoom projector important for a mobile professional? By having a zoom projector, you will be able to choose a larger size screen for a larger audience and a smaller size screen for a smaller audience without moving the position of the projector.
Instead of moving the projector you will be able to just use your zoom function. It will save you the hassle of moving furniture around in a new environment. Another reason to use zoom is to achieve the brightness of the screen that will overwhelm any residual light from the environment.
This is especially true if the room cannot be completely darkened. So whenever you feel your image on the screen is too dim compared to the background light, just turn on the zoom, reduce the size of the image and increase the brightness of the image.
In time you will learn to strike a balance and you will be able to achieve an image that is bright enough for everyone to see clearly with a good contrast and have an image on the screen large enough for everyone to be able to read the letters as well. The zoom function will help you find that balance.
In this article, we have answered the questions about the zoom projector. We have seen how it differs from the projector focus, and how zoom relates to the size and the brightness of the projected image on the screen. And, most importantly, we have seen how having a zoom function with a significant range can help mobile professional set up the zoom projector for maximum readability and enjoyment of the material by the audience.
Perhaps you will find a value in autofocus mini projectors so you can concentrate on zoom instead. So now, equipped with this know-how, go out and check the zoom values for zoom projectors you are looking for.
Hopefully, you will be better able to determine what zoom projector suits your needs best.
Before you buy a projector, check out the advice about buying overhead projectors cheap.
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