Operating Manual

same user.
➢ Rotate the focusing ring (2) of the objective lens to focus on the object
to be observed.
➢ To set the image mode, display brightness, image sharpness, image
contrast, and so on, refer to the Shortcut Menu section in this manual.
➢ After use, press and hold the
Power button (5) and a
shutdown countdown is
displayed. Release the button
after the countdown. The
thermal camera is turned off.
10 Calibration
Benefit from the shutterless thermal imaging core, Zoom series capture
high-quality images without a mechanical shutter.
In rare cases, once the image is degraded or uneven, it can be improved
by calibration. There are two calibration modes:
➢ On the home screen, briefly press the button Up (6) and down (8) to
perform the calibration without closing the lens cap (the internal shutter
covers the sensor).
➢ Close the lens cap press and hold the button Up (6) and down (8). A
text prompt reading “Cover lens during calibration” will appear on the
screen. The background calibration will start after 2s.
11 Digital Zoom
The Zoom series supports quick digital zoom-in for images, to increase
visual magnification.
➢ On the home screen, briefly press the Up button (6) to circularly zoom
the image.
➢ The corresponding magnification is displayed in the status bar.
➢ The following table lists the visual magnifications corresponding from
the 1× to 4×.
Model
Focal
Length
Digital Zoom
1×
2×
3×
4×
ZH25
13mm
1.1
2.2
3.3
4.4
25mm
2.2
4.4
6.6
8.8
ZH38
19mm
1.6
3.2
4.8
6.4
38mm
3.2
6.4
9.6
12.8
ZH50
25mm
2.2
4.4
6.6
8.8
50mm
4.4
8.8
13.2
17.6