On Fri, 6 Dec 2024 at 08:04, Frederic Da Vitoria wrote: > Hello, > > When I dragged the 3 pictures into Hugin, it warned me that "The project > covers a big brightness range (...)", which is true. I proceeded as usual: > create control points, optimize and output to layered TIFF. I did not ask > Hugin to optimize photometric parameters, as I prefer to do the > optimization myself in Gimp. The third photo is obviously lighter in the > panorama than the original (and on looking closely, the first photo is > slightly darker, but this does not bother me so much as the amount of > correction here is small). > > I tried everything I could think of, but the only way I could get a > panorama close to the originals was by asking Hugin to optimize photometric > parameters, which is something I don't want him to do. > > Can someone tell me what is going on and how I can get a panorama with > photometric parameters identical to the source photos? >
Hugin reads the EXIF metadata and adjusts the exposure of each photo in the project so they all look like they were taken with the same exposure. Sometimes this works very well, but it can result in ugly blown out areas depending on your camera. This adjustment happens when you initially add the photos, when you optimise the Ev these values will change slightly, but probably not much. If you don't want this behaviour, the simplest thing you can do is to set the Ev of all your input photos *and* the Ev of your panorama output to the same number. I also find that increasing the enblend levels helps cover the mismatch. -- Bruno -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups "hugin and other free panoramic software" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/hugin-ptx/CAJV99ZhMNqfXbgN_8Jp0TywsbextKio7d-okDZYCKmr9z0DGwg%40mail.gmail.com.
