What patterns do you guys use to check the focus of the system?
I found these in the service menu of my BenQ to be really helpful.
One of the most annoying things to me is when text, particularly rolling credits change in focus from bottom to top. The vertical lines pattern is the easiest way to see if there is a problem. Other patterns just help prove over all focus.
NB the projector defaults to native lamp which looks really green and the camera had made those other artifacts visible.
The camera may not be showing true focus of the image.
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