Focusing - Fluke Ti40FT-20 User Manual

TiR2,TiR3,TiR4,Ti40,Ti45,Ti50,Ti55
Users Manual
aligned correctly when you install it on the camera. Correct alignment is
achieved by installing the lens such that the white alignment marking on the
lens lines up with the corresponding mark on the camera housing as shown in
Figure 5-1.
Alignment Mark
eii021.eps
Figure 5-1. Aligning the 20-mm Lens

Focusing

Prior to capturing images using the visible light module and IR Fusion, it is
important to make sure the target object is in focus. As you rotate the infrared
(IR) lens to focus the camera, if the IR blend is less than 50%, the IR Fusion
blend level changes to 50% infrared and 50% visible light (VL). Once you
have the target object in focus and stop rotating the IR lens, the IR Fusion level
returns to your setting. You can focus the infrared portion of the image only;
the focus of the VL portion is set at the factory.
To focus the camera, remove the IR lens cap, point the lens at the target, and
manually rotate the infrared lens with your finger. Focus by aligning the edges
of the IR and VL images.
5-2