Projector & Projection Screen Rentals in Las Vegas

 

Ellingson Audio Visual.com

 
 
 

Aspect Ratio



If you must project multiple formats, the above scenario is inevitable. In that case, we suggest selecting the format that you will use more often.

In some applications, so many formats will be used that it only makes sense to go with a Square format screen to accommodate them all. One example is a traditional 35mm slide show, where both portrait and landscape photos will be shown. While Slide format (1.48) would fit the landscape photos perfectly, portrait shots will be shrunk to fit the screen height and loss of detail will occur. In this case, renting a square format screen will accommodate both landscape and portrait 35mm slides at full resolution.


The table below lists several common aspect ratios and their associated projection formats.


Aspect Ratio

Decimal Equivalent

Projection Format


Overhead & opaque projection


2x2 standard slides (35mm) 


High-end data graphics


NTSC/PAL (video and most data graphics)


WXGA (1280x800 pixels)


WXGA (1280x768 pixels)


HDTV


Letterbox, widescreen, Panavision


70mm film


Cinemascope


1:1 or 1.0


3:2 1.50


5:4 1.25


4:3 1.33


16:10 1.60


15:9 1.67


16:9 1.78


1.85:1 1.85


2.05:1 2.05


2.35:1 2.35



Da-Tex™

A translucent, neutral gray vinyl fabric that allows rear projection in applications where a rigid acrylic or glass screen are not possible. This specially designed gray vinyl surface offers the same high transmission and low reflectance values as a rigid rear projection screen for optimal viewing. It yields excellent color rendition, image contrast and a moderately wide viewing angle.

Viewing Angle: 33°
Gain: 1.3

High Contrast Da-Tex™

High Contrast Da-Tex™ is a unity gain rear projection surface with a specially designed dark gray tint and is formulated to provide lower black levels for today's high output projectors. This surface features optical characteristics similar to rigid rear projection screens.

Viewing Angle: 40°
Gain: 1.0

Dual Vision

A unity gain flexible projection fabric capable of both front and rear projection. The surface is ideal for video projection under controlled light conditions. With an exceptionally wide viewing cone, each seat in the audience will observe a uniform, bright, sharp image with no color shift.

Viewing Angle: 50°
Gain: 1.0

Ultra Wide Angle

Flexible Fabric Screen:

Ultra Wide Angle is a flexible rear projection fabric formulated for applications where exceptionally wide viewing angles are desired and ambient light is controlled. Based on its ability to diffuse light uniformly, Ultra Wide Angle fabric is ideal for installations utilizing multiple projection edge blending or wide format screens with short focal length projection lenses. By virtue of its characteristics, Ultra Wide Angle fabric dramatically reduces the potential of hot spotting.

Viewing Angle: 80°
Gain: 0.70

 

FRONT PROJECTION SCREEN SURFACES - Tensioned Screens

Da-Mat™

A screen surface with a smooth, white vinyl finish for precise image reproduction that provides an exceptionally wide viewing angle and no resolution loss. It is a highly flexible fabric that may be folded or rolled. Its versatility makes it a great choice for situations with good control over ambient light and where an exceptionally wide viewing angle is necessary.

Viewing Angle: 60°
Gain: 1.0

Cinema Vision

A unique non-supported vinyl fabric that offers a bright, uniform image with no color shift at any viewing angle. This surface is designed to provide a higher amount of brightness for lower output projector types such as CRT. Its increased reflectivity will help enhance the image brightness in situations where a low level of ambient light is present. This surface is a good choice when producing video images.

Viewing Angle: 45°
Gain: 1.3

Pearlescent

A non-supported vinyl fabric, offering a higher degree of reflectivity and brilliance without loss of image quality or resolution. This surface is a good choice when producing video images with a lower output projector and where there is a high amount of ambient light present.

Viewing Angle: 40°
Gain: 1.5

Audio Vision

Designed for applications where a more realistic soundstage is desired, this fabric allows for the installation of speakers to be placed behind the surface. With virtually no sound loss and good image quality, this fabric provides the same optical characteristics as the Da-Mat surface with specially designed perforations to allow sound to pass through the screen material.

Viewing Angle: 60°
Gain: 1.0

High Contrast Da-Mat™

With a special gray surface, this screen material is designed for use with today's high output LCD, DLP and D-ILA projectors. By lowering the black levels of the projected video image, this surface creates a more film-like image and is a good choice when video is the main source of projected information. This screen surface is best used when there is good control of ambient lighting and a moderately wide viewing angle is desired.

Viewing Angle: 45°
Gain: 0.8

High Contrast Cinema Vision

Designed for today’s moderate output DLP and LCD projectors, this screen surface is a great choice when video images are the main source of information being projected and where ambient lighting is moderately controlled. With its specially designed gray base surface and a reflective top surface, this screen material is able to provide very good black levels without sacrificing the white level output. With its enhanced black levels and brilliant white levels, this screen surface provides deep life-like colors and greater detail and sharpness to the image.

Viewing Angle: 50°
Gain: 1.1

High Contrast Audio Vision

With the same optical characteristics as the High Contrast Da-Mat material, this surface is designed to provide the viewer with a more realistic soundstage by placing speakers behind the screen and allowing the sound to be transmitted through the material. This screen surface is best used when there is good control of ambient lighting and a moderately wide viewing angle is desired.

Viewing Angle: 45°
Gain: 0.8

High Contrast Cinema Perf

With the same optical characteristics as High Contrast Cinema Vision, this surface is perforated to allow placement of a center channel speaker behind the screen surface while allowing the sound to transmit through the material. Ideal for use in environments with moderate control of ambient light.

Viewing Angle: 50°
Gain: 1.1

Silver Vision

This screen surface is uniquely designed with a specially formulated silver finish. This surface is perfect for situations where a silver finish is necessary for polarized 3-D projection. The silver finish of this surface successfully rejects ambient light.

Viewing Angle: 30°
Gain: 1.5


FRONT PROJECTION SCREEN SURFACES - Tripod and Cradle Screens

Matte White

One of the most versatile screen surfaces and a good choice for situations when presentation material is being projected and ambient light is controllable. Its surface evenly distributes light over a wide viewing area. Colors remain bright and life-like, with no shifts in hue.

Viewing Angle: 60°
Gain: 1.0

High Contrast Matte White

Designed for moderate output DLP and LCD projectors. This screen surface is a great choice when video images are the main source of information being projected and where ambient light is moderately controlled. With its specially designed gray base material and reflective top surface, this screen material is able to provide very good black levels without sacrificing the white level output.

Viewing Angle: 50°
Gain: 1.1

Video Spectra™ 1.5

This screen surface is specially designed with a reflective coating, which provides an increased amount of brightness with a moderately reduced viewing angle. The increased gain of this surface makes it suitable for environments where ambient lighting is uncontrollable and a projector with moderate light output is utilized.

Viewing Angle: 35°
Gain: 1.5

Silver Matte

A uniquely designed screen surface with a specifically designed silver finish. This surface is perfect for situations where a silver surface is necessary for a polarized 3-D projection. The matte finish of this surface successfully rejects ambient light.

Viewing Angle: 30°
Gain: 1.3

High Power

A technological breakthrough, providing the reflectivity and optical characteristics of a traditional glass beaded surface with the ability to clean the surface when necessary. Its smooth textured surface provides the highest gain of all front projection screen surfaces with no resolution loss. The moderate viewing angle and its ability to reflect light back along the projection axis make this surface the best choice for situations where there is a moderate amount of ambient light and the projector is placed on a table-top or in the same horizontal viewing plane as the audience. Flame retardant and mildew resistant.

Viewing Angle: 30°
Gain: 2.8


How to choose the best size...



OK, as you can imagine, the ideal screen size depends on the type of things you'll be projecting. Movies are easier to see from a distance while presentations with text require the audience to be closer so they can see the detail.



Screen Height

Below, I outline a few common applications and their related screen height guidelines. In all cases, the screen height is the viewable height, not the total screen height.

I admit that these are only guidelines and may not be achievable within the constraints of your particular room/application/projector. As is the case with all guidelines, it is best to follow them as close as practically feasible.

Once you determine the ideal height, the width can be calculated easily from the format or aspect ratio of the screen. See our format page for more details.

General Guidelines

How close is too close? I suggest that the first row of viewers be no closer than 2 screen heights away from the screen to avoid being overwhelmed by the projected image. This is shown in the figures below.

How far is too far away? Well that depends on what is being projected, as mentioned above. The sections below go into more details.

Movies and TV

In this case, the furthest audience member should be no further than 6 screen heights away from the screen. Since TV and movies generally lack great detail, the audience can be far away from the screen.


For example, if your room is 30 feet long and the audience will go to the back of the room, your screen should be at least 5 feet high and the first row of seats should be at least 10 feet from the screen.

Presentations with charts, data and text

In this case, the furthest audience member should be no further than 4 screen heights away from the screen to ensure that all text and details are readable.


Complex Graphics and Data

If you're projecting a lot of detailed information, typical of a command or control center, naturally viewers need to be closer to the screen. In this case, we suggest placing viewers no further than 2 screen heights away from the screen.


Screen Width

Once the ideal projection screen height is determined, screen width can be easily computed if you know the format you need. For more information about formats, see the top of this page.

Study this page to learn more about projector format, projection surfaces, and the optimum configuration for you event. Otherwise, we will personally help you make the decision on screen size and surface type. Email or Call 702.769.2892 to get your projection rental needs squared away. We guarantee to beat any other price for projection screen rentals in Las Vegas!

 

How to choose the best Format...

Screen formats are quoted in terms of their width-to-height aspect ratio. For example, HDTV format is 1.78, meaning that the width of an HDTV format screen is always 1.78 times the height.

The variation of screen width for a given height is shown to scale in the figure at left.

It's important to match the screen format with the format of the projected content, since doing otherwise leads to wasted screen space and loss of apparent contrast.

For example, if you project an HDTV image onto a Video or Square format screen, there will be unused areas above and below the HDTV image, since you must to shrink the HDTV image to match the other format's width. The unused space is shown as the gray areas in the figure to the right.

In this example, an HDTV image is projected onto a square format screen.

In this case, the apparent contrast drops since the projected image is not surrounded by a matte black border, as it would be if projected onto an HDTV format screen. Believe it or not, the matte black border convinces our eyes that the projected image has increased contrast, so it is always better to fill the projected image out to the border.

 
 

This is definitely one of the easier questions to answer when choosing a projection screen. The format may already be pre-determined by your projection method and the type of information projected. The most common projection screen format we provide is 1.33 or 4:3. However, 1.78 or 16:9 is becoming more and more common in the world of video projection. This is because it is the new standard for laptops, computer monitors, and televisions. Many presentation though, are still formatted 4:3 or 1.33 as this has been the industry standard for years. If you are new to presenting, or just want to know everything there is to know about screen format and the different projection screen surfaces available, read the following and you’ll be an expert.

5k Projector
Projector screen
Seminar with dual screens

DECIDING ON PROJECTION & PROJECTORS...

Below are a few guides to help you decide on your Projection Rental needs. Call 702-400-7785 or Email us with any projection questions you may have.



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