Vignetting curve but don' want to brighten the whole photo

[Philip Chong]

Hey, I play with the vignetting curve and it did a good job of blending/even out the seams line to the rest of the photo.

But I don't want it brighten the whole photo, only at the seams line.

Is this possible?

Thanks.

[PTGui Support]

Hi Philip,

Make sure you have a 50% overlap when PTGui is analyzing the vignetting.
So the center of one image overlaps with the edge of another. Only then
PTGui has a complete view of the overlap and it should be able to
determine the full curve.

You can then save the curve and apply it to an actual project where the
overlap is smaller.

If the overlap is narrow (for example when using back-to-back fisheye
images), PTGui only has information about a small part of the vignetting
curve so it has to fill in the gaps by guessing.

And if it brightens the whole panorama, you can always darken it again
in the Post Processing tab. Since this is all done in the stitching
pipeline, it should not affect the image quality by clipping.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

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