Here is a link to an image where Nona gives banding in the remapped image, even without using exposure correction. I used PTMender on the same files, there was no banding. By banding I mean the image becomes posterized in bands or rings in areas where there is very little contrast.
The original files don't have any banding, but they must be very close, since I can't even make a JPEG in Photoshop without getting banding. Usually I don't have many banding issues unless I use exposure correction for some reason. My question is: What is the difference between how Nona and PTMender remap files? Why is the colour different? What causes the banding in one and not the other? You can see the original TIFFs, PTO file, PTMender Script and derivative JPEGs at http://www.23degrees.net/easy_fetch/11d41b882ace73c6c1f23b7375250f46/ I ran the test three times on OS X 10.5.5 1. PTmender Version 2.9.12 - No Banding 2. nona version 0.7.0 - Banding and missing colour profile 3. nona version 0.7.0a (modified source to include ICC via ExifTool, the official release of Nona OS X does not put ICC profiles into mapped images) - Banding The file: Nikon D200 uncompressed RAW converted to 16 BIT TIFF in Photoshop CS3, ProPhotoRGB ICC profile. The exposures were long enough to cause some noise in the original files. Noise was removed mostly from the blue channel with very weak Noise Ninja processing. I checked for banding in Photoshop CS3 at 100% on a 24 inch iMac (this monitor that has no banding problems, unlike the smaller versions) I also tried the same files before Noise Ninja with all the original noise of the D200 and the result was same banding problem. * NOTE: all the JPEGs contain banding due to the compression, you will need to download the original 16 BIT TIFF files. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "hugin and other free panoramic software" group. A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/hugin-ptx -~----------~----~----~----~------~----~------~--~---
