configuration: APG 2.5 RC windows 32 bits

During the week-end, I tested 2.5 RC with an already available .pano file.

I noticed that on some of the images the shutter had been set to "0" and I would like to know if this is normal.

To answer the question, you have to know the way I work:
- From Nikon raw files, I generate tif files
- During this process, performed with Nikon Capture NX2, I modify the exposure (by +/- 0.5 increments).
- When the images are input to APG, I edit them to change the shutter in coherence with the exposure change. But you have to know that the shutter I put may not be part of the camera shutter range. e.g. 1/125 initial shutter speed and a correction of 0.5 may lead to, say, 1/85. Will this "1/85" be accepted by APG ?