Obtaining a preferred projected image size

BenQ MP624, MP623 user manual Obtaining a preferred projected image size

Obtaining a preferred projected image size

The distance from the projector lens to the screen, the zoom setting (if available), and the video format each factors in the projected image size.

4:3 is the native aspect ratio of this projector. To be able to project a complete 16:9 (widescreen) aspect ratio image, the projector can resize and scale a widescreen image to the projector's native aspect width. This will result in a proportionally smaller height equivalent to 75% of the projector's native aspect height.

4:3 aspect image in a 4:3	16:9 aspect image scaled to a 4:3 aspect
aspect display area	display area

Thus, a 16:9 aspect image will not utilize 25% of the height of a 4:3 aspect image displayed by this projector. This will be seen as darkened (unlit) bars along the top and bottom (vertical 12.5% height respectively) of the 4:3 projection display area whenever displaying a scaled 16:9 aspect image in the vertical center of the 4:3 projection display area.

The projector should always be placed horizontally level (like flat on a table), and positioned directly perpendicular (90° right-angle square) to the horizontal center of the screen. This prevents image distortion caused by angled projections (or projecting onto angled surfaces).

The modern digital projector does not project directly forward (like older style reel-to-reel film projectors did). Instead, digital projectors are designed to project at a slightly upward angle above the horizontal plane of the projector. This is so that they can be readily placed on a table and will project forward and upwards onto a screen positioned so that the bottom edge of the screen is above the level of the table (and everyone in the room can see the screen).

If the projector is mounted on a ceiling, it must be mounted upside-down so that it projects at a slightly downward angle.

You can see from the diagram on page 16, that this type of projection causes the bottom edge of the projected image to be vertically offset from the horizontal plane of the projector. When ceiling mounted, this refers to the top edge of the projected image.

If the projector is positioned further away from the screen, the projected image size increases, and the vertical offset also increases proportionately.

When determining the position of the screen and projector, you will need to account for both the projected image size and the vertical offset dimension, which are directly proportional to the projection distance.

BenQ has provided a table of 4:3-aspect-ratio screen sizes to assist you in determining the ideal location for your projector. There are two dimensions to consider, the perpendicular horizontal distance from the center of the screen (projection distance), and the vertical offset height of the projector from the horizontal edge of the screen (offset).

14 Positioning your projector

MP624, MP623 specifications

The BenQ MP623 and MP624 are compact and versatile projectors that cater to various presentation needs in both professional and educational settings. These projectors are designed to deliver high-quality visuals coupled with user-friendly features, making them ideal for business meetings, classrooms, and small to medium-sized venues.

One of the standout features of the MP623 and MP624 is their impressive brightness output. With a brightness of up to 2500 ANSI lumens, these projectors ensure clear and vivid images, even in well-lit environments. The 2000:1 contrast ratio further enhances image quality, providing deeper blacks and more vibrant colors, which is essential for creating engaging presentations.

Both models utilize DLP (Digital Light Processing) technology, known for its reliability and high performance. DLP technology minimizes the risk of color degradation over time, maintaining consistent image quality. This technology also enables the projectors to produce sharp images with smooth motion, making them suitable for displaying video content as well as static presentations.

The MP623 and MP624 come equipped with a native resolution of XGA (1024 x 768), which is ideal for displaying standard presentations and graphics. They also support multiple resolutions, allowing for flexibility in different usage scenarios. The projectors are compatible with various input sources, including HDMI, VGA, and composite video, making it easy to connect to laptops, desktops, and other multimedia devices.

Portability is another key characteristic of the MP623 and MP624. Weighing in at just a few kilograms, these projectors are lightweight and easy to transport, perfect for professionals on the go. Their compact design does not compromise on performance, and they can be quickly set up in different environments, from conference rooms to classrooms.

User-friendly features are also prominent in these models. The intuitive menu system and remote control make it simple to navigate through settings and customize presentations. Furthermore, the inclusion of various preset modes allows users to optimize their viewing experience according to the content being displayed, whether it be text, graphics, or video.

In addition to their impressive technology and features, the MP623 and MP624 are designed with longevity in mind. They are equipped with long-lasting lamps, offering extended usage hours and minimizing maintenance costs. The efficient cooling system helps prolong lamp life while ensuring quiet operation, which is critical during presentations.

In conclusion, the BenQ MP623 and MP624 projectors combine portability, high brightness, and advanced DLP technology, making them excellent choices for professionals and educators seeking reliable and versatile projection solutions. With their user-friendly features and quality image output, these projectors are well-suited for a wide range of applications, enhancing presentations in any setting.