How many ansi

It is commonly used to rate the brightness of a data projector. An ANSI lumen rating uses an average of several measurements taken across the face of the light source.

A small room typically requires from to ANSI lumens, whereas a large room may require from to A large auditorium may need or more. In a room with the lights on, but no light directly over the area where you will project the image — to lumens should be sufficient. In a room with bright ambient light — to lumens should be sufficient. Good portable projectors offer at least lumens, preferably using LED technology. They work great outdoors at night and even during daytime, perfect for camping with robust builds, lots of connectivity, and compact, highly moveable designs.

A lumen is the amount of light a certain lamp gives off. A 70 Watt LED fixture can produce Lumens or more and replace most highway and parking lot lighting fixtures to a more efficient and cost effecting light. The more lumens the better. Most experts recommend 2,, lumens for outdoor projectors to be enjoyed in daylight hours, although more is better for bright, sunny days. Resources Explore. Support Product Support. Customer Service. Contact Us. How Can We Help?

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I want to sell or integrate ViewSonic products Ask an Expert. The Bottom Line : Most home theater projectors should start at lumens at a minimum, regardless of other factors. I already briefly touched on resolutions. However, it warrants another mentioning here as it directly impacts the lumens you need.

After you understand the type of content you want to primarily use your projector for, you should consider the resolution you will need to accurately project the images. The Bottom Line : While your content, screen size and ambient light will likely push your lumens up, keeping your resolution in mind will ensure your image provides a clear image suited to your needs. Ambient light is actually one of the biggest factors when you are looking to invest in a projector.

Ambient light refers to the level of natural light that filters into the room where you intend to use your projector. Ambient light directly affects the brightness and, therefore, should be carefully considered when reviewing lumen specifications. In order to determine the proper lumens as they relate to ambient light, you also need to consider the intended screen size. Screen size is measured diagonally from the lower left corner to the upper right corner.

The Bottom Line : Carefully evaluate the level of light coming into the area where you intend to use your projector.

Buying a projector that does not take into account the ambient light and screen size can seriously affect your image quality. It is best that you invest in a projector that, at a minimum, meets with the highest estimated lumen need.

This is because having more than you need will not affect the image. But having too few? That will greatly reduce your image quality. I am wondering if that might work. My projector will be 15 feet away. Leslie you might email me if possible Where do you live? When you say "screen size that measures between " is that a diagonal measurement? Your side is very clear otherwise! Thank you.

Very useful content and well explained. I have to run a projector in a hall about 4m from a x cms screen. If curtains are closed then what lumens? Unfortunately, your article is almost as misleading as manufactures. However, in every instance where you provide a recommendation you only list lumen leaving the reader to question are you referring to lumen or ANSI lumen!

What Are Projector Lumens? As with lumens, ANSI contrast ratios provide a more accurate measurement due to more standardized test criteria. At a minimum, you will want a contrast ratio of for your home theater projector. Resolution: Often, the resolution is conveyed through pixel measurements.

Pixels tell you how high your resolution, or image sharpness, can be. For most, a p resolution, which is measured as x pixels, is ideal for a home theater projector. The throw ratio, on the other hand, tells you how far or close your projector needs to be to the screen for optimal image quality.

Both of these measurements are entirely personal choices based on the size of your screen and the room you plan to project in. Content Resolution Ambient Light The number of lumens you need should be a cumulative assessment of these three factors.