Lens

The Lens tool displays the area around the cursor at a magnified scale in the multi-function window, allowing you to examine a section of the chart in detail without changing the overall scale of the main window.

Tool activation

The tool is activated by clicking the lens icon Lens in the tool selection menu. When the tool is enabled, the active cursor changes to Lens cursor, and a rectangular frame proportional to the multi-function window dimensions is drawn around the cursor.

Important

In lens mode, chart panning is blocked!

Lens display

The lens is displayed in the Multi-function window under the Overview tab.

Lens display in the overview window

№

Element

Description

1

Viewing area

The frame displays the area shown in the multi-function window

2

Current scale

ENC display scale in the multi-function window. Default is x.1.2

3

ENC centering

In Lens mode, if Center on was enabled, it switches to Center off

4

Scale control

Changing the ENC scale in the multi-function window. The scale can also be changed by rotating the mouse wheel

Warning

ENC display density in Lens mode is preset and cannot be adjusted separately.

Working with the lens

Moving the viewing area:

  1. Using the mouse: move the cursor across the chart — the cursor and the area rectangle will move accordingly, with the chart in the overview window being redrawn

  2. On a touchscreen: the cursor and rectangle are moved by touching the area of interest

Changing the scale:

When moving the cursor with the left mouse button held down or by holding your finger on the touchscreen, the scale will be Best Scale x 1.5.

Operating features

Display scale:

  • The multi-function window shows the chart at the largest scale within the area bounded by the cursor rectangle

  • When holding the mouse button, the scale increases to Best Scale x 1.5

Synchronization:

  • Moving the cursor on the main window automatically updates the image in the lens

  • The rectangular frame follows the cursor movement

  • The chart in the overview window is redrawn in real time

  • Chart orientation — course-up

Limitations:

  • Chart panning is blocked in lens mode

  • To pan the chart, switch to another tool

Tip

Use the lens tool to examine chart areas in detail without changing the main window scale.

This is especially convenient when working with navigational objects, buoys, and other chart elements that require detailed study without losing the overall context of the main display.

Note

The dimensions of the lens rectangular frame are directly dependent on the multi-function window dimensions. When the window is resized, the frame automatically adapts.