Archived posting to the Leica Users Group, 2001/01/14
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Dave, I use something called Genuine Fractals. It is a Photoshop plug-in that allows you to store images in a compressed form, open them at any size without the loss of quality that comes with upscaling in photoshop. You need about a 20 meg file for it to work at its best which then compresses to 10-15megs. Once opened you can convert the file into any format you want via photoshop 'save as' command. Tina manley put me on to it (thanks Tina). I also use Vuescan which stops me using crazy resolutions. I normally scan in Vuescan using 16bit grayscale, to about 11x16 inches with a res of about 340/360. When I've adjusted levels/curves in PS I then convert to 8bit grayscale which leaves a file of about 20meg for GF to compress. There is a demo at www.genuinefractals.com Julian - ----- Original Message ----- From: "Dave Richards" <dprichards@qwest.net> To: <leica-users@mejac.palo-alto.ca.us> Sent: Sunday, January 14, 2001 10:00 PM Subject: [Leica] Digital Image File Formats > The current thread concerning the archival storge of digital images brings > up another question: > > Which of the file formats currently available for the hobbyist (GIF, JPG, > TIFF, BMP, etc) offers the greatest image quality and color rendition with > the least loss of information? I am making an assumption that stored file > size isn't an issue, at least in regard to the answer to this question. > > For instance, I have been told that JPEG images, if uncompressed for > editing and then recompressed, will lose information, but I've also heard > that there is such a thing as a JPEG algorithm that doesn't lose > information when uncompressed/recompressed. > > I know practically nothing about this as you can probably guess, so any > information the members can provide will be helpful. Also, if anyone can > direct me to one or more web sites or documents that can provide me with > enlightenment I will be grateful. > > TIA > > Dave Richards > Littleton, Colorado, USA > dprichards@qwest.net >