DNG from scans typically just contains an embedded tiff. You really aren't rendering from raw data like say from a camera. Its not raw data really. DNG is just a container really, much like a few image file formats and many of the various video file formats. What makes DNG kind of useful with scanning is that you can just run the results through ACR and apply color profiles and what not. Once nice thing about it is that it will save your adjustments in metadata. As everyone has said lightroom will rotate the image and which probably just changes the rotation flag in the dng. LR is kind of nice in how it doesn't really do much to the original files other than update metadata and you can turn that off too if you're really paranoid.
On Sat, Sep 20, 2014 at 4:00 AM, Attila Boros <[email protected]> wrote: > In ACR you can rotate them and then click on the "Save Image..." > button in the bottom left corner. > > On Sat, Sep 20, 2014 at 4:47 AM, John <[email protected]> wrote: >> I'm scanning old slides, using Vuescan and saving them as .DNG files. I just >> got to the end of a batch of 36 slides & on the *LAST* slide I discover that >> I've put them all in the scanner BACKWARDS!! >> >> Is there any program that will let me flip .DNG images horizontally and KEEP >> them as .DNG files? Photoshop will only let me save them as .PSD files and >> FastStone Image Viewer appears to only allow me to do it if I save them as >> JPEGs. Irfanview says I can save it as a RAW file, but when I tried that I >> haven't been able to find the file. >> >> Am I going to have to scan the whole batch again? >> >> -- >> Science - Questions we may never find answers for. >> Religion - Answers we must never question. >> >> -- >> PDML Pentax-Discuss Mail List >> [email protected] >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
