No problem, but I'm still wondering if I should switch to TIFF for my originals.
On Wed, May 11, 2011 at 9:27 PM, Ron Ferguson <[email protected]> wrote: > Larry, > > My apologies, you are quite correct, and I should have checked! I have > always thought of it as lossy, but since I only use it for its transparency > properties and, therefore, generally convert a picture to this format only > once, I have never bothered to check. > > Thank you for the correction. > > Ron Ferguson > http://www.fergys.co.uk/ > > -----Original Message----- > From: Larry McCumber > Sent: Thursday, May 12, 2011 2:16 AM > To: [email protected] > Subject: Re: [LegacyUG] scanning photographs > > Ron, everything that I've read about PNG format is that it is fully > lossless. I'm hoping that is true because that is the main format > that I use for all my photographs. One of the discussion links is > http://www.libpng.org/pub/png/pngintro.html, but even so I may have to > look into TIFF from now on. > > Larry > > On Wed, May 11, 2011 at 4:10 PM, Ron Ferguson > <[email protected]> wrote: >> Larry, >> >> The point is that a TIFF is lossless. What this means is that you can edit >> the picture eg remove blemishes, alter colour balance etc. and then save >> without any loss in picture quality. With other formats, including PNG, >> when >> you save after editing then there is a quality reduction, and this is >> accumulative, so the more times you do an edit and save then the greater >> the >> loss in quality. With, say, a JPG the loss it not noticeable after only >> one >> or two edit/saves but is often very obviously after more. The loss occurs >> on >> saving, btw, not during the edit. >> >> Hence the recommendation to save the master as a TIFF and the files in use >> as JPG, PNG GIF etc.. >> >> Ron Ferguson >> http://www.fergys.co.uk/ >> >> -----Original Message----- >> From: Larry McCumber >> Sent: Wednesday, May 11, 2011 8:37 PM >> To: [email protected] >> Subject: Re: [LegacyUG] scanning photographs >> >> These specs were those also given in the seminar by Maureen Taylor on >> the 14th. I never could find out why .tif format as opposed to .png >> or some other loss-less format. I typically use .png, so I am >> interested in why .tif. >> >> Larry >> >> On Wed, May 11, 2011 at 12:44 PM, Mike Fry <[email protected]> wrote: >>> On 2011/05/11 17:32, Reba Solomon wrote: >>>> To the best of what I could learn, when scanning photographs for >>>> posterity, you >>>> should be doing minimum of 600 dpi, 100% scale, always scan as a colored >>>> photograph, and save as a .tif file. I'm not a photographer, so does >>>> anyone >>>> here have opinions or additions to this advice? >>> >>> This web site used to have some very good information on it. >>> >>> <http://www.scantips.com/> >>> >>> -- >>> Regards, >>> Mike Fry >>> Johannesburg > > > > Legacy User Group guidelines: > http://www.LegacyFamilyTree.com/Etiquette.asp > Archived messages after Nov. 21 2009: > http://www.mail-archive.com/[email protected]/ > Archived messages from old mail server - before Nov. 21 2009: > http://www.mail-archive.com/[email protected]/ > Online technical support: http://www.LegacyFamilyTree.com/Help.asp > Follow Legacy on Facebook (http://www.facebook.com/LegacyFamilyTree) and on > our blog (http://news.LegacyFamilyTree.com). > To unsubscribe: http://www.LegacyFamilyTree.com/LegacyLists.asp > > > Legacy User Group guidelines: http://www.LegacyFamilyTree.com/Etiquette.asp Archived messages after Nov. 21 2009: http://www.mail-archive.com/[email protected]/ Archived messages from old mail server - before Nov. 21 2009: http://www.mail-archive.com/[email protected]/ Online technical support: http://www.LegacyFamilyTree.com/Help.asp Follow Legacy on Facebook (http://www.facebook.com/LegacyFamilyTree) and on our blog (http://news.LegacyFamilyTree.com). To unsubscribe: http://www.LegacyFamilyTree.com/LegacyLists.asp
