CP45 Camera resolutions

Does anyone know what the meaning of the Fixed vision options here https://file.yizimg.com/397047/2014010615545616.pdf showing two checkboxes, one 32mm, the other 17mm?

The issue at hand is that fixed camera(upward facing) resolution really to low to reliably recognize certain parts. I wish this was user zoomable or something. The fly cam actually works better for BGA than the upward facing camera, as its about effectively twice the resolution for the 5 regular and better yet on fly cam #6.

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