thanks Jeff, overrode the auto extif lens setting and manually put it at 1000mm but this one particular image is still giving me a bad alignment, lot of repeating clapboard siding on this one particular building I photographed.Attached are jpegs
one thing I have found is that PTgui works better on some images than others
FYI, I am shooting with a cambo ultima 35, canon 1ds mark III, Schneider 28, hassi 50 and hassi 80mm. for the most part I am happy with the rig...
If I may ask, why do you need HDR for such a shot?
Anyway, I don't do much HDR these days, but always use PTgui's Enfuse implementation when I do (need to correct distorsion after the fact though). A recent sample (no stitch here):
For single bracketed imagesI have never had a single problem stacking up with <0.01 pixel accuracy (PTgui optimizer value) up to 5 images shot taken with my DSLR and a very robust tripod/head. PTgui has by far the best alignement engine on the market for such images.
Now it could be that the combination of HDR and flat stitching was not part of the testing patterns for PTgui and that some problems occur. PTgui was clearly optimized for cylindrical stitching and makes assumptions based on this. It is also not that good at stitching images that have been assembled in DoF stacking software since this modifies the actual focal lenght of the lenses between images. PS works with a more generic pattern recognition engine and sometimes deals better with such non standard cases.
Else, your results might indicate that something is moving quite a bit between your frames:
- the tripod,
- the head,
- your view camera,
- the DSLR relative to the view camera
You would have a lot less problems with cylindrical stitching...
Cheers,
Bernard