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As described earlier, rolling shutter causes pervasive distortions on images and the resulting solves. SynthEyes allows you to correct for the solve for those effects, producing results corresponding to an idealized camera. It does that by approximately removing the effect of the rolling shutter from the tracker data before solving.
The downside is that after the solve, the tracker data is no longer being corrected, and there will be apparent errors in the 3D position of the tracker as visible in the camera viewport. Any test mesh insertions are rendered using the idealized non- rolling camera also, and accordingly will not match the original imagery to the extent of whatever rolling shutter effects are present.
Although final renders produced with rolling-shutter-capable renderers (eg from Lightwave) will match nicely, these effects definitely make it harder to assess the quality of the solve, and the source of any problems in it. We may be able to mitigate them in the future.
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