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It is important that the Resolv4K Zoom be properly installed onto the mount.  All flat mounts 
(1-80370, 1-80371, 1-80270, 1-80271) have a ledge on the backplate.  This ledge is to sit 
within the notch located at the center of the Resolv4K Zoom or Fixed body tube (see diagram 
below).  This provides a solid surface for which the system can be held.  Install the saddle 
over the lens and secure with M5 screws using the 4mm hex wrench supplied with the mount.

USING THE MOUNT WITH THE RESOLV4K SYSTEM

Left:

 Location of ledge on mount and notch on body tube.   

Right: 

Secure saddle with screws.

To set parfocality zoom to high magnification. Adjust 
the “Z” axis to achieve best focus.  Then zoom to 
low magnification, do not adjust “Z” axis to refocus. 
Unlock the screws and adjust the parfocality using the 
adjustment ring on the rear adapter.  When the image 
is in optimal focus, you should be able to go through 
zoom without loss of focus. Lock the parfocality ring 
in two places (see Fig.1) using a 1.5mm hex wrench 
(supplied with your lens).

All Resolv4K rear adapters have boresight 
adjustability.  The adjustment is made by using a 
1.5mm hex wrench to adjust the M3 set screws at the 
top of the adapter (see Fig. 2).

Tip:  For easier boresight adjustment, first loosen the 
M3 screws and align the “X” axis of the sensor along 
the same “line” as one of the M3 screws.  Next, use 
the (2) wrenches (supplied with your lens) in opposite 
positions along the “X” axis to adjust the boresight.  
This type of alignment enables the user to “push” the 
image in the direction being actuated.

SET PARFOCALITY & BORESIGHT

Fig. 1: Location of parfocality 

adjustment. Secure with set screw.

Fig. 2: Location of set screws for 

boresight adjustment.

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