XLights preview resolution grid and house preview size

[MarkH]

I have a 85ft/26m wide ranch home with a viewing distance of around 70ft/21m from the far side of the street. Using a wide angle lens my house just did not match how it really looks with the height and positions of small trees. Keep in mind the distortion is common with wide angle lenses and being a skilled photographer I went back out and shot the house at 46mm focal setting and shot several frames creating a pano. The house looks correct now when brought into xlights but has a large black area above the house image.
The preview window has height and width values which default to (x=1280) x (y=720). Reducing the 720 value to 375 removes the black area mask and mostly shows the full pano frame.

The question: Does reducing this value reduce the invisible grid size xlights uses to locate each pixel? If so, how will that effect the overall show accuracy?

[Gilrock]

The invisible grid you mention is only applicable to group models.  And the answer is it depends.  If you were using the default of Minimal Grid you probably won't see a difference.  Other than that its hard to say.  You reduced the grid size almost in half but if all you cutout was black areas I don't know if any changes.  You'll need to try it and tell us.  The preview will show you everything you need to know.

[MarkH]

OK, I added a mega tree so it was the same size at the coarser res of 370. There did not appear to be a drastic enough difference with both 2 color spiral or 3 color fan effects to say yes or no. So I guess logic would dictate we go no.

Perhaps with only using half of the original preview the relative resolution stays the same regardless of resize.