Let’s look at the conclusion first

The focus line determines the main reading height, the text width determines the scanning distance of each line, and the alignment determines the starting point of the text. Adjusting the three together can bring the line of sight closer to the camera and reduce the left and right swing caused by long lines.

Adjustment suggestions

1. Press and hold the orange focus drag handle on the right side for about half a second. After you feel a slight vibration, drag it up or down until it is close to the height of the lens. A tap or swipe will not change the position.
2. When precise adjustments are needed, use the "Focus Line Position" slider in the settings; the adjustable range is 10% to 90% of the screen height.
3. Set text width between 30% and 100%. It can be slightly wider when held at close range, and the small floating window should be appropriately narrowed for long distances.
4. Choose left, center, or right alignment according to your reading habits. Long text is usually left-aligned to make it easier to find lines, and short sentences can be centered.
5. If you do not need a visual reference, you can hide the focus line; when you need to reduce interference in the upper and lower areas, you can turn on edge fading.
6. Try it out with the actual document instead of just seeing a preview of the settings.

Notice

The focus line is only used for reading positioning and does not change the recognition content of the AI. When activated by a long press, it only vibrates once and then starts to move. When the system turns off tactile feedback, a long press is still effective. When the focus line is hidden, the AI still works around the currently visible position.