11-23-2017, 04:54 PM
Another finding! My Thanksgiving holiday has me visiting with family who have more modern electronics than mine. A pretty new TV could display the "Progressive Mode" files without any indication of a difference. I suppose that is good news but until cameras adopt this mode, I'm inclined to want what they support.
With respect to conversion, while bulk/batch mode could be helpful, I think a problem this likely presents is a reduction in quality from success/iterative use of the lossy compression. In that, jpg to jpg conversion is something I've been trying to avoid. At the same time this might be a good opportunity to learn a bit about ImageMagic. I'll do some experimenting.
Also, with respect to my overall objective there is a consideration where www support is relevant. I've been trying to maximize quality which means scanning at fairly high resolution into a lossless file format (i.e., .tif) of directly into GIMP (e.g., a feature I find very desirable). Recognizing that those files which I'm putting onto a web site, run under webtrees, don't need such high resolution, I have been scaling them down to lower resolution. From the lesson received herein it looks like "Progressive Mode" should be used for those files.
With respect to conversion, while bulk/batch mode could be helpful, I think a problem this likely presents is a reduction in quality from success/iterative use of the lossy compression. In that, jpg to jpg conversion is something I've been trying to avoid. At the same time this might be a good opportunity to learn a bit about ImageMagic. I'll do some experimenting.
Also, with respect to my overall objective there is a consideration where www support is relevant. I've been trying to maximize quality which means scanning at fairly high resolution into a lossless file format (i.e., .tif) of directly into GIMP (e.g., a feature I find very desirable). Recognizing that those files which I'm putting onto a web site, run under webtrees, don't need such high resolution, I have been scaling them down to lower resolution. From the lesson received herein it looks like "Progressive Mode" should be used for those files.