by markdfink » Mon Aug 06, 2012 10:46 pm
I've come up with a workaround solution. In PTGui, I stitch a full size image, such as a recent one that was 11345x15055 pixels in dimension. I also stitched a lower resolution version that was only 5000x6583 pixels. Since there were three exposures, for each stitch, I ended up with three separate TIFF images.
I tried combining the three full sized images in SNS HDR, but didn't have enough RAM to handle the job, so instead, I combined the three lower resolution images, getting just the right HDR blending. (GREAT software by the way!) I then created a new preset that I named the same as the image file and in the same directory as the images.
Next, I opened the full sized stitched images in Photoshop, they were all in one PSB file, each in its own layer. I chopped each layer into four smaller sections, each 6000x8000 pixels so that I had overlap. I then opened each group of sections in SNS HDR and applied the saved preset from earlier to get exactly the same blending as before. I saved these blended images as 16 bit TIFF images.
Finally, I created a new blank Photoshop file that was 11345x15055 pixels, the same as the original full sized stitch, and pasted the four sections in, each on its own layer. In hindsight, I should have had more overlap when I chopped the original file up because I could see some edge differences, but I was still able to put a layer mask on each layer and feather out the differences. I then flattened the layers and saved the TIFF. Comparing it to the 5000x6583 proved to me that they are identically blended.
Now, I need to find a way to automate some of this, especially since I have a few stitches that are significantly larger than this. Hope this helps!
Mark