Z=4
，
NFOV Z=8
（
NFOV & 2× electronic zoom
）
Fig 7-2
4. Focus Adjustment
e, manual focus adjustment is necessary after starting up. Generally,
. Polarity
larity mode, higher brightness indicates higher temperature,. In negative polarity mode,
ress “P” to invert. If current mode is positive polarity, press “P” to change into
In order to get clear imag
NFOV is sensitive to focus adjustment. So, switch camera to NFOV firstly. After getting correct
focus, then switch it to WFOV. The image quality should be the same for the same target. Focus
adjustment method: Press “SHIFT” for 3 seconds until red part in keyboard get bright; then
release “SHIFT”; Keep pressing “SHIFT” and then “F” to adjust far focus, keep pressing
“SHIFT” and then “N” to adjust nearfocus. If keeping pressing “SHIFT” & “F” or “SHIFT” & “N”,
IR136
Thermal Camera
will adjust far or near focus continuously. Information bar on bottom of
image will display “FAR” or “NEAR” to indicate current focusing operation.
5
In positive po
lower brightness indicates higher temperature,. Fig. 7-3 shows image effect of same target with
different polarities.
Operation method: P
negative polarity.
17
