プロジェクターの台形補正完全ガイド

Complete Guide to Projector Keystone Correction: Automatic & Manual Settings and Tips for Fixing Distortion

📐 "My image looks trapezoidal," or "The image tilted when I projected it from an angle"—all these issues can be solved with keystone correction. By understanding how to set it correctly, you can project a perfectly rectangular image in any setup.

What is keystone correction? Why do images distort?

When you project an image from a projector positioned diagonally or vertically off-center from the screen or wall, the image will appear trapezoidal. This is an optical phenomenon caused by light hitting the surface at an angle. Keystone correction digitally corrects this distortion, adjusting the image into a proper rectangle.

Types and differences of keystone correction

🖐️ Manual Vertical Keystone Correction

Manually adjust vertical distortion using the keystone correction button on the remote. This is the most common method. Supported by Aestiquo Q1, P1, and X26.

🔲 4-Point Correction

High-precision correction that allows individual adjustment of the four corners of the image. Suitable for diagonal projection and irregular setups. Supported by Aestiquo P1.

🤖 Auto Correction (Model-Dependent)

A function that automatically detects tilt and applies correction using a built-in sensor. Please check each product page for compatibility.

📐 Digital Zoom

A function to adjust the projection size to fit the screen. Used in combination with keystone correction.

⚠️ Caution: Excessive keystone correction can degrade image quality. To maintain image quality, try to position the projector as squarely as possible to the screen and minimize the amount of correction.

Keystone correction setup procedure (remote control operation)

Set up the projector and turn it on

Place the projector facing the desired wall or screen. Position it within the recommended projection distance.

Press the keystone correction button on the remote

Press the "Keystone Correction ± button" on the remote. Adjustment begins when the correction value appears on the screen.

Adjust the distortion with the ± buttons

If the top edge is wider, adjust in the "-" direction; if the bottom edge is wider, adjust in the "+" direction. Finely adjust until all four corners are right angles, checking the image from the front.

Confirm and save with the OK button

Once rectangular, press the OK button to confirm. Settings are saved and will be maintained on subsequent startups.

For detailed instructions on Q1 remote control operations, please refer to this dedicated article.

Keystone correction features of each Aestiquo model

Aestiquo Q1

  • Vertical keystone correction: ✅ Supported (remote control operation)
  • Horizontal correction: ❌ Not supported (handle by placing the main unit horizontally)
  • 4-point correction: Please check the product page
  • Equipped with a 270° rotating stand

Aestiquo P1

  • Vertical keystone correction: ✅ Supported
  • 4-point correction: ✅ Supported
  • Equipped with a 270° rotating stand
  • Built-in Android TV

Aestiquo X26

Checklist when keystone correction isn't working well

Symptom Cause Solution
Distortion remains after correction Installation angle is too large Position the projector squarely to the screen
Horizontal distortion cannot be fixed Vertical correction only supports up and down Re-position the main unit horizontally
Remote control unresponsive Low battery / Receiver blocked Replace batteries / Remove obstructions
Image quality degraded after correction Correction amount is too large Adjust installation position to reduce correction amount
Edges of the image are cut off Beyond correction range Review projection distance and angle

Tips for installation without compromising image quality

Front installation is key

Keystone correction is an auxiliary function. Positioning the projector directly in front and center of the screen is fundamental to maximizing image quality. The less correction applied, the minimal the impact on image quality.

Utilize 270° and 180° rotating stands

The 270° rotating stands on the Aestiquo Q1 and P1, and the 180° rotating stand on the X26, allow for diverse installation angles including ceiling, wall, and floor, while minimizing the need for keystone correction.

Aestiquo Q1

Aestiquo Q1 Projector | Vertical Keystone Correction, 270° Rotation, 1080P/4K Support

Easy vertical keystone correction via remote control. 270° rotating stand offers excellent installation flexibility for ceiling, wall, and floor projection.

View Product Page →
Aestiquo P1

Aestiquo P1 Projector | Vertical Keystone Correction, 4-Point Correction, Built-in Android TV

Supports both vertical keystone correction and 4-point correction. Achieves perfect rectangular images in any installation environment.

View Product Page →

Frequently Asked Questions (FAQ)

Does keystone correction degrade image quality?
Yes, because keystone correction is a digital process, a larger amount of correction will have a greater impact on image quality. To minimize correction, we recommend positioning the projector as squarely as possible to the screen.
Can Q1 correct horizontal distortion?
Q1's keystone correction only supports vertical (up and down) adjustments. If horizontal distortion occurs, please reposition the projector horizontally to resolve it.
Can keystone correction be used for ceiling projection?
Yes, keystone correction works for ceiling projection. The 270° rotating stands on the Aestiquo Q1 and P1 support ceiling projection, and when combined with keystone correction, you can project a correct image immediately after setup.
Can keystone correction settings be reset?
Yes, keystone correction can be reset from the settings menu. You can also reset all settings by restoring to factory default settings.
※The information in this article is current at the time of writing. For the latest specifications and operating instructions, please refer to the instruction manuals for each product and their respective product pages. For detailed remote control operations of the Q1, please also refer to the dedicated article.
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