Projection guide

Screen size and readability

Ask GLMedia about screen size and placement for your intended content. We review aspect ratio, viewing distances, and an actual sample.

Planning criteria

With the date, location, and intended use, we can review which equipment and combination can be offered. You can inquire before measurements, drawings, or the final schedule are ready.

Diagonal alone does not describe usable image area or last-row readability. Record image width, height, aspect ratio, position, and demanding content.

Start with a photo and sample slide. We can turn missing measurements into a practical room check list.

System decisions

Aspect ratio: Distinguish 16:9, 16:10, and 4:3. The same diagonal gives different widths and heights across these formats.
Position: Measure bottom-edge height and distance to critical viewing positions. Check heads, furniture, stage, and sightline obstructions.
Content: Test text and contrast from distant seats. Simplify dense tables when reading requires it.

What to share

Share available width and height, seating layout, and photos from critical views. Identify detailed data versus mainly visual content.

If the drawing is pending, mark screen and last row on a sketch. We can identify measurements to confirm.

Tell us what the audience must read: headings, table values, captions, or product detail. If there is side seating, include that view in the sketch alongside the last row.

Preparing the comparison

Record image-area measurements separately from frame and structure.
Match slide, equipment output, and screen aspect ratios; check borders and cropping without stretching content.
Check bottom edge and visibility from critical seats with the room set up.
Show demanding content under planned lighting. Adjust text size, design, or screen and repeat the affected check.
Prepare a representative slide with the smallest text the audience actually needs to read. Check it from the agreed positions and record what becomes unreadable before changing the screen or content.
If a table is too dense, compare a version split across several slides. Keep the original file and confirm values, labels, and videos remain complete after adaptation.

Technical questions and show decisions

Is the diagonal enough?
Is there a fixed screen size for an attendee count?
Will higher resolution fix any small text?
Should we use a larger screen or distributed displays for the show?
What are the width and height of 100, 120, 150, and 200 inch screens in 16:9?

Is the diagonal enough?

Also request width, height, and aspect ratio of the visible area. Frame measurements may differ from the image area.

Is there a fixed screen size for an attendee count?

Seating, distance, obstructions, and content affect reading. We can compare positions and sizes without deriving them from attendance alone.

Will higher resolution fix any small text?

Review projected physical size and reading distance. A better signal does not remove obstructions or automatically enlarge screen content.

Should we use a larger screen or distributed displays for the show?

Start with what each audience section needs to see. Review distant and side viewing positions, obstructions, and a sample of the most demanding content. If space limits the main screen, compare another location, additional displays, or content adapted with clearer text and graphics.

The proposal can cover displays, signal distribution, installation, and operation, or supplement venue equipment after checking inputs, formats, and the signal path. Define what each screen will show and test from agreed viewing positions. Additional displays need their own sightline checks; adding them does not replace that assessment.

What are the width and height of 100, 120, 150, and 200 inch screens in 16:9?

As a geometric calculation of image area, excluding the frame: 100 inches is approximately 2.21 × 1.25 m; 120 is 2.66 × 1.49 m; 150 is 3.32 × 1.87 m; and 200 is 4.43 × 2.49 m. These rounded values apply to 16:9: width = diagonal × 16 / √337 and height = diagonal × 9 / √337, converting inches to meters. They are not structural dimensions or values for another aspect ratio.

Dimensions do not guarantee readability or brightness. Allow for frame, support, and placement height, then test the smallest text from the back and sides. Photos, approximate audience size, and a sample slide let us compare a main screen, support displays, or content adaptation before finalizing the proposal.

Checks to guide decisions

Projection guide
Symptom	Check	What it helps distinguish
Bottom hidden	Bottom edge and sightlines.	Position.
Small text at the back	Sample from last row.	Content and size.
Unexpected borders	File, output, and screen aspect ratios.	Format.

Installation and limits

Check actual structure and space before defining height or attachment.

Keep the original presentation format before adapting it. Review video, graphics, and text after changes.

Sources and context

Official model-specific documentation. Check variant, accessories, and conditions before applying settings or calculations.

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